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54139523 = 1371912069
BaseRepresentation
bin1100111010000…
…1101010000011
310202212120110112
43032201222003
5102324431043
65212221535
71225115114
oct316415203
9122776415
1054139523
1128618909
121616a8ab
13b2a7629
14729420b
154b46518
hex33a1a83

54139523 has 8 divisors (see below), whose sum is σ = 54846720. Its totient is φ = 53437120.

The previous prime is 54139517. The next prime is 54139529. The reversal of 54139523 is 32593145.

It is an interprime number because it is at equal distance from previous prime (54139517) and next prime (54139529).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-54139523 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 54139523.

It is not an unprimeable number, because it can be changed into a prime (54139529) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25133 + ... + 27201.

It is an arithmetic number, because the mean of its divisors is an integer number (6855840).

Almost surely, 254139523 is an apocalyptic number.

54139523 is a deficient number, since it is larger than the sum of its proper divisors (707197).

54139523 is a wasteful number, since it uses less digits than its factorization.

54139523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2397.

The product of its digits is 16200, while the sum is 32.

The square root of 54139523 is about 7357.9564418390. The cubic root of 54139523 is about 378.3015682715.

The spelling of 54139523 in words is "fifty-four million, one hundred thirty-nine thousand, five hundred twenty-three".

Divisors: 1 137 191 2069 26167 283453 395179 54139523