57404407 has 2 divisors, whose sum is σ = 57404408. Its totient is φ = 57404406.

The previous prime is 57404317. The next prime is 57404429. The reversal of 57404407 is 70440475.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-57404407 is a prime.

It is a Chen prime.

It is equal to p_3417169 and since 57404407 and 3417169 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57404807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28702203 + 28702204.

It is an arithmetic number, because the mean of its divisors is an integer number (28702204).

Almost surely, 2^57404407 is an apocalyptic number.

57404407 is a deficient number, since it is larger than the sum of its proper divisors (1).

57404407 is an equidigital number, since it uses as much as digits as its factorization.

57404407 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15680, while the sum is 31.

The square root of 57404407 is about 7576.5696063588. The cubic root of 57404407 is about 385.7581216167.

The spelling of 57404407 in words is "fifty-seven million, four hundred four thousand, four hundred seven".