57878537 has 2 divisors, whose sum is σ = 57878538. Its totient is φ = 57878536.

The previous prime is 57878533. The next prime is 57878567. The reversal of 57878537 is 73587875.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 56987401 + 891136 = 7549^2 + 944^2 .

It is a cyclic number.

It is not a de Polignac number, because 57878537 - 2² = 57878533 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (57878531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28939268 + 28939269.

It is an arithmetic number, because the mean of its divisors is an integer number (28939269).

Almost surely, 2^57878537 is an apocalyptic number.

It is an amenable number.

57878537 is a deficient number, since it is larger than the sum of its proper divisors (1).

57878537 is an equidigital number, since it uses as much as digits as its factorization.

57878537 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1646400, while the sum is 50.

The square root of 57878537 is about 7607.7944898637. The cubic root of 57878537 is about 386.8172635576.

The spelling of 57878537 in words is "fifty-seven million, eight hundred seventy-eight thousand, five hundred thirty-seven".