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54158031 = 332387211
BaseRepresentation
bin1100111010011…
…0001011001111
310202220111212000
43032212023033
5102331024111
65212443343
71225223064
oct316461317
9122814760
1054158031
1128630804
1216179553
13b2b2b95
14729ac6b
154b4bc56
hex33a62cf

54158031 has 16 divisors (see below), whose sum is σ = 83723520. Its totient is φ = 34535160.

The previous prime is 54158029. The next prime is 54158033. The reversal of 54158031 is 13085145.

54158031 is a `hidden beast` number, since 54 + 1 + 580 + 31 = 666.

It is an interprime number because it is at equal distance from previous prime (54158029) and next prime (54158033).

It is not a de Polignac number, because 54158031 - 21 = 54158029 is a prime.

It is a super-2 number, since 2×541580312 = 5866184643593922, which contains 22 as substring.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 54157986 and 54158004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54158033) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42985 + ... + 44226.

It is an arithmetic number, because the mean of its divisors is an integer number (5232720).

Almost surely, 254158031 is an apocalyptic number.

54158031 is a deficient number, since it is larger than the sum of its proper divisors (29565489).

54158031 is a wasteful number, since it uses less digits than its factorization.

54158031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87243 (or 87237 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 27.

The square root of 54158031 is about 7359.2140205324. The cubic root of 54158031 is about 378.3446717650.

The spelling of 54158031 in words is "fifty-four million, one hundred fifty-eight thousand, thirty-one".

Divisors: 1 3 9 23 27 69 207 621 87211 261633 784899 2005853 2354697 6017559 18052677 54158031