57147031 has 2 divisors, whose sum is σ = 57147032. Its totient is φ = 57147030.

The previous prime is 57147017. The next prime is 57147037. The reversal of 57147031 is 13074175.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 57147031 - 2⁹ = 57146519 is a prime.

It is a super-2 number, since 2×57147031² = 6531566304229922, 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 (57147037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28573515 + 28573516.

It is an arithmetic number, because the mean of its divisors is an integer number (28573516).

Almost surely, 2^57147031 is an apocalyptic number.

57147031 is a deficient number, since it is larger than the sum of its proper divisors (1).

57147031 is an equidigital number, since it uses as much as digits as its factorization.

57147031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2940, while the sum is 28.

The square root of 57147031 is about 7559.5655298436. The cubic root of 57147031 is about 385.1807348421.

The spelling of 57147031 in words is "fifty-seven million, one hundred forty-seven thousand, thirty-one".