57031129 has 2 divisors, whose sum is σ = 57031130. Its totient is φ = 57031128.

The previous prime is 57031067. The next prime is 57031133. The reversal of 57031129 is 92113075.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 56595529 + 435600 = 7523^2 + 660^2 .

It is a cyclic number.

It is not a de Polignac number, because 57031129 - 2¹³ = 57022937 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 57031097 and 57031106.

It is not a weakly prime, because it can be changed into another prime (57031199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28515564 + 28515565.

It is an arithmetic number, because the mean of its divisors is an integer number (28515565).

Almost surely, 2^57031129 is an apocalyptic number.

It is an amenable number.

57031129 is a deficient number, since it is larger than the sum of its proper divisors (1).

57031129 is an equidigital number, since it uses as much as digits as its factorization.

57031129 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1890, while the sum is 28.

The square root of 57031129 is about 7551.8957222674. The cubic root of 57031129 is about 384.9201588527.

The spelling of 57031129 in words is "fifty-seven million, thirty-one thousand, one hundred twenty-nine".