57274621 has 2 divisors, whose sum is σ = 57274622. Its totient is φ = 57274620.

The previous prime is 57274619. The next prime is 57274627. The reversal of 57274621 is 12647275.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 42758521 + 14516100 = 6539^2 + 3810^2 .

It is a cyclic number.

It is not a de Polignac number, because 57274621 - 2¹ = 57274619 is a prime.

Together with 57274619, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57274627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28637310 + 28637311.

It is an arithmetic number, because the mean of its divisors is an integer number (28637311).

Almost surely, 2^57274621 is an apocalyptic number.

It is an amenable number.

57274621 is a deficient number, since it is larger than the sum of its proper divisors (1).

57274621 is an equidigital number, since it uses as much as digits as its factorization.

57274621 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23520, while the sum is 34.

The square root of 57274621 is about 7567.9998017970. Note that the first 3 decimals coincide. The cubic root of 57274621 is about 385.4671812216.

The spelling of 57274621 in words is "fifty-seven million, two hundred seventy-four thousand, six hundred twenty-one".