57878497 has 2 divisors, whose sum is σ = 57878498. Its totient is φ = 57878496.

The previous prime is 57878477. The next prime is 57878507. The reversal of 57878497 is 79487875.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 48385936 + 9492561 = 6956^2 + 3081^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-57878497 is a prime.

It is not a weakly prime, because it can be changed into another prime (57878407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28939248 + 28939249.

It is an arithmetic number, because the mean of its divisors is an integer number (28939249).

Almost surely, 2^57878497 is an apocalyptic number.

It is an amenable number.

57878497 is a deficient number, since it is larger than the sum of its proper divisors (1).

57878497 is an equidigital number, since it uses as much as digits as its factorization.

57878497 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3951360, while the sum is 55.

The square root of 57878497 is about 7607.7918609804. The cubic root of 57878497 is about 386.8171744475.

The spelling of 57878497 in words is "fifty-seven million, eight hundred seventy-eight thousand, four hundred ninety-seven".