57090537961 has 2 divisors, whose sum is σ = 57090537962. Its totient is φ = 57090537960.

The previous prime is 57090537941. The next prime is 57090538049. The reversal of 57090537961 is 16973509075.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30343898025 + 26746639936 = 174195^2 + 163544^2 .

It is a cyclic number.

It is not a de Polignac number, because 57090537961 - 2²³ = 57082149353 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 57090537899 and 57090537908.

It is not a weakly prime, because it can be changed into another prime (57090537941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28545268980 + 28545268981.

It is an arithmetic number, because the mean of its divisors is an integer number (28545268981).

Almost surely, 2^57090537961 is an apocalyptic number.

It is an amenable number.

57090537961 is a deficient number, since it is larger than the sum of its proper divisors (1).

57090537961 is an equidigital number, since it uses as much as digits as its factorization.

57090537961 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1786050, while the sum is 52.

The spelling of 57090537961 in words is "fifty-seven billion, ninety million, five hundred thirty-seven thousand, nine hundred sixty-one".