57156553 has 2 divisors, whose sum is σ = 57156554. Its totient is φ = 57156552.

The previous prime is 57156521. The next prime is 57156563. The reversal of 57156553 is 35565175.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 29246464 + 27910089 = 5408^2 + 5283^2 .

It is a cyclic number.

It is not a de Polignac number, because 57156553 - 2⁵ = 57156521 is a prime.

It is not a weakly prime, because it can be changed into another prime (57156563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28578276 + 28578277.

It is an arithmetic number, because the mean of its divisors is an integer number (28578277).

Almost surely, 2^57156553 is an apocalyptic number.

It is an amenable number.

57156553 is a deficient number, since it is larger than the sum of its proper divisors (1).

57156553 is an equidigital number, since it uses as much as digits as its factorization.

57156553 is an evil number, because the sum of its binary digits is even.

The product of its digits is 78750, while the sum is 37.

The square root of 57156553 is about 7560.1953017101. The cubic root of 57156553 is about 385.2021269553.

The spelling of 57156553 in words is "fifty-seven million, one hundred fifty-six thousand, five hundred fifty-three".