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57210161 = 536716111
BaseRepresentation
bin1101101000111…
…1010100110001
310222122120120212
43122033110301
5104121211121
65402113505
71263164321
oct332172461
9128576525
1057210161
112a325928
12171ab895
13bb11188
147853281
15505125b
hex368f531

57210161 has 8 divisors (see below), whose sum is σ = 59163264. Its totient is φ = 55289520.

The previous prime is 57210143. The next prime is 57210163. The reversal of 57210161 is 16101275.

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

It is a cyclic number.

It is not a de Polignac number, because 57210161 - 214 = 57193777 is a prime.

It is a zygodrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (57210163) 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, 4505 + ... + 11606.

It is an arithmetic number, because the mean of its divisors is an integer number (7395408).

Almost surely, 257210161 is an apocalyptic number.

It is an amenable number.

57210161 is a deficient number, since it is larger than the sum of its proper divisors (1953103).

57210161 is a wasteful number, since it uses less digits than its factorization.

57210161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16231.

The product of its (nonzero) digits is 420, while the sum is 23.

The square root of 57210161 is about 7563.7398818309. The cubic root of 57210161 is about 385.3225183012.

The spelling of 57210161 in words is "fifty-seven million, two hundred ten thousand, one hundred sixty-one".

Divisors: 1 53 67 3551 16111 853883 1079437 57210161