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57157401 = 373737297
BaseRepresentation
bin1101101000001…
…0011100011001
310222112220012210
43122002130121
5104113014101
65401025333
71262554440
oct332023431
9128486183
1057157401
112a29a224
1217185249
13bac3162
14783bd57
1550407d6
hex3682719

57157401 has 16 divisors (see below), whose sum is σ = 87342464. Its totient is φ = 32569344.

The previous prime is 57157391. The next prime is 57157409. The reversal of 57157401 is 10475175.

It is not a de Polignac number, because 57157401 - 219 = 56633113 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (57157409) 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, 4185 + ... + 11481.

It is an arithmetic number, because the mean of its divisors is an integer number (5458904).

Almost surely, 257157401 is an apocalyptic number.

It is an amenable number.

57157401 is a deficient number, since it is larger than the sum of its proper divisors (30185063).

57157401 is a wasteful number, since it uses less digits than its factorization.

57157401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7680.

The product of its (nonzero) digits is 4900, while the sum is 30.

The square root of 57157401 is about 7560.2513847094. The cubic root of 57157401 is about 385.2040319558.

The spelling of 57157401 in words is "fifty-seven million, one hundred fifty-seven thousand, four hundred one".

Divisors: 1 3 7 21 373 1119 2611 7297 7833 21891 51079 153237 2721781 8165343 19052467 57157401