57616387 has 2 divisors, whose sum is σ = 57616388. Its totient is φ = 57616386.

The previous prime is 57616381. The next prime is 57616409. The reversal of 57616387 is 78361675.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-57616387 is a prime.

It is not a weakly prime, because it can be changed into another prime (57616381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28808193 + 28808194.

It is an arithmetic number, because the mean of its divisors is an integer number (28808194).

Almost surely, 2^57616387 is an apocalyptic number.

57616387 is a deficient number, since it is larger than the sum of its proper divisors (1).

57616387 is an equidigital number, since it uses as much as digits as its factorization.

57616387 is an evil number, because the sum of its binary digits is even.

The product of its digits is 211680, while the sum is 43.

The square root of 57616387 is about 7590.5458960473. The cubic root of 57616387 is about 386.2323741534.

The spelling of 57616387 in words is "fifty-seven million, six hundred sixteen thousand, three hundred eighty-seven".