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57204049 = 715752051
BaseRepresentation
bin1101101000110…
…1110101010001
310222122021012111
43122031311101
5104121012144
65402025321
71263140440
oct332156521
9128567174
1057204049
112a321281
12171a8241
13bb0b466
147850d57
15504e534
hex368dd51

57204049 has 8 divisors (see below), whose sum is σ = 65793728. Its totient is φ = 48718800.

The previous prime is 57204023. The next prime is 57204067. The reversal of 57204049 is 94040275.

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 57204049 - 29 = 57203537 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 57204049.

It is not an unprimeable number, because it can be changed into a prime (57204089) 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, 24927 + ... + 27124.

It is an arithmetic number, because the mean of its divisors is an integer number (8224216).

Almost surely, 257204049 is an apocalyptic number.

It is an amenable number.

57204049 is a deficient number, since it is larger than the sum of its proper divisors (8589679).

57204049 is a wasteful number, since it uses less digits than its factorization.

57204049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52215.

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 57204049 is about 7563.3358381074. The cubic root of 57204049 is about 385.3087959422.

The spelling of 57204049 in words is "fifty-seven million, two hundred four thousand, forty-nine".

Divisors: 1 7 157 1099 52051 364357 8172007 57204049