57325916261 has 2 divisors, whose sum is σ = 57325916262. Its totient is φ = 57325916260.

The previous prime is 57325916227. The next prime is 57325916267. The reversal of 57325916261 is 16261952375.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 35832597025 + 21493319236 = 189295^2 + 146606^2 .

It is a cyclic number.

It is not a de Polignac number, because 57325916261 - 2²² = 57321721957 is a prime.

It is a super-3 number, since 3×57325916261³ (a number of 33 digits) contains 333 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57325916267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28662958130 + 28662958131.

It is an arithmetic number, because the mean of its divisors is an integer number (28662958131).

Almost surely, 2^57325916261 is an apocalyptic number.

It is an amenable number.

57325916261 is a deficient number, since it is larger than the sum of its proper divisors (1).

57325916261 is an equidigital number, since it uses as much as digits as its factorization.

57325916261 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 680400, while the sum is 47.

The spelling of 57325916261 in words is "fifty-seven billion, three hundred twenty-five million, nine hundred sixteen thousand, two hundred sixty-one".