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54168213 = 3118092029
BaseRepresentation
bin1100111010100…
…0101010010101
310202221000211010
43032220222111
5102331340323
65213002433
71225264551
oct316505225
9122830733
1054168213
1128638420
1216183419
13b2b76c8
1472a0861
154b4ec93
hex33a8a95

54168213 has 16 divisors (see below), whose sum is σ = 78926400. Its totient is φ = 32772480.

The previous prime is 54168209. The next prime is 54168217. The reversal of 54168213 is 31286145.

54168213 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (54168209) and next prime (54168217).

It is not a de Polignac number, because 54168213 - 22 = 54168209 is a prime.

It is a super-2 number, since 2×541682132 = 5868390599226738, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54168217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25683 + ... + 27711.

It is an arithmetic number, because the mean of its divisors is an integer number (4932900).

Almost surely, 254168213 is an apocalyptic number.

It is an amenable number.

54168213 is a deficient number, since it is larger than the sum of its proper divisors (24758187).

54168213 is a wasteful number, since it uses less digits than its factorization.

54168213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2852.

The product of its digits is 5760, while the sum is 30.

The square root of 54168213 is about 7359.9057738534. The cubic root of 54168213 is about 378.3683805544.

The spelling of 54168213 in words is "fifty-four million, one hundred sixty-eight thousand, two hundred thirteen".

Divisors: 1 3 11 33 809 2029 2427 6087 8899 22319 26697 66957 1641461 4924383 18056071 54168213