57642031 has 2 divisors, whose sum is σ = 57642032. Its totient is φ = 57642030.

The previous prime is 57641981. The next prime is 57642037. The reversal of 57642031 is 13024675.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 57642031 - 2¹¹ = 57639983 is a prime.

It is a super-2 number, since 2×57642031² = 6645207475609922, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57642037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28821015 + 28821016.

It is an arithmetic number, because the mean of its divisors is an integer number (28821016).

Almost surely, 2^57642031 is an apocalyptic number.

57642031 is a deficient number, since it is larger than the sum of its proper divisors (1).

57642031 is an equidigital number, since it uses as much as digits as its factorization.

57642031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5040, while the sum is 28.

The square root of 57642031 is about 7592.2349147007. The cubic root of 57642031 is about 386.2896673092.

The spelling of 57642031 in words is "fifty-seven million, six hundred forty-two thousand, thirty-one".