57252581 has 2 divisors, whose sum is σ = 57252582. Its totient is φ = 57252580.

The previous prime is 57252563. The next prime is 57252607. The reversal of 57252581 is 18525275.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 33535681 + 23716900 = 5791^2 + 4870^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-57252581 is a prime.

It is a super-3 number, since 3×57252581³ (a number of 24 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57252511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28626290 + 28626291.

It is an arithmetic number, because the mean of its divisors is an integer number (28626291).

Almost surely, 2^57252581 is an apocalyptic number.

It is an amenable number.

57252581 is a deficient number, since it is larger than the sum of its proper divisors (1).

57252581 is an equidigital number, since it uses as much as digits as its factorization.

57252581 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 28000, while the sum is 35.

The square root of 57252581 is about 7566.5435305693. The cubic root of 57252581 is about 385.4177306592.

The spelling of 57252581 in words is "fifty-seven million, two hundred fifty-two thousand, five hundred eighty-one".