57272437 has 2 divisors, whose sum is σ = 57272438. Its totient is φ = 57272436.

The previous prime is 57272387. The next prime is 57272447. The reversal of 57272437 is 73427275.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 57138481 + 133956 = 7559^2 + 366^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-57272437 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 57272396 and 57272405.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57272447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28636218 + 28636219.

It is an arithmetic number, because the mean of its divisors is an integer number (28636219).

Almost surely, 2^57272437 is an apocalyptic number.

It is an amenable number.

57272437 is a deficient number, since it is larger than the sum of its proper divisors (1).

57272437 is an equidigital number, since it uses as much as digits as its factorization.

57272437 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 82320, while the sum is 37.

The square root of 57272437 is about 7567.8555086629. The cubic root of 57272437 is about 385.4622816051.

The spelling of 57272437 in words is "fifty-seven million, two hundred seventy-two thousand, four hundred thirty-seven".