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57038757 = 3179471181
BaseRepresentation
bin1101100110010…
…1011110100101
310222022212110120
43121211132211
5104100220012
65354312153
71261551516
oct331453645
9128285416
1057038757
112a219076
1217128659
13ba81159
14780aa0d
15501a58c
hex36657a5

57038757 has 16 divisors (see below), whose sum is σ = 80678592. Its totient is φ = 35720960.

The previous prime is 57038713. The next prime is 57038767. The reversal of 57038757 is 75783075.

It is a cyclic number.

It is not a de Polignac number, because 57038757 - 26 = 57038693 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57038767) 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, 47707 + ... + 48887.

It is an arithmetic number, because the mean of its divisors is an integer number (5042412).

Almost surely, 257038757 is an apocalyptic number.

It is an amenable number.

57038757 is a deficient number, since it is larger than the sum of its proper divisors (23639835).

57038757 is a wasteful number, since it uses less digits than its factorization.

57038757 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2148.

The product of its (nonzero) digits is 205800, while the sum is 42.

The square root of 57038757 is about 7552.4007441343. The cubic root of 57038757 is about 384.9373193060.

The spelling of 57038757 in words is "fifty-seven million, thirty-eight thousand, seven hundred fifty-seven".

Divisors: 1 3 17 51 947 1181 2841 3543 16099 20077 48297 60231 1118407 3355221 19012919 57038757