57204157 has 2 divisors, whose sum is σ = 57204158. Its totient is φ = 57204156.

The previous prime is 57204089. The next prime is 57204179. The reversal of 57204157 is 75140275.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 45954841 + 11249316 = 6779^2 + 3354^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-57204157 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57204557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28602078 + 28602079.

It is an arithmetic number, because the mean of its divisors is an integer number (28602079).

Almost surely, 2^57204157 is an apocalyptic number.

It is an amenable number.

57204157 is a deficient number, since it is larger than the sum of its proper divisors (1).

57204157 is an equidigital number, since it uses as much as digits as its factorization.

57204157 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9800, while the sum is 31.

The square root of 57204157 is about 7563.3429778108. The cubic root of 57204157 is about 385.3090384269.

The spelling of 57204157 in words is "fifty-seven million, two hundred four thousand, one hundred fifty-seven".