57464021 has 2 divisors, whose sum is σ = 57464022. Its totient is φ = 57464020.

The previous prime is 57463981. The next prime is 57464027. The reversal of 57464021 is 12046475.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 47472100 + 9991921 = 6890^2 + 3161^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-57464021 is a prime.

It is a super-2 number, since 2×57464021² = 6604227418976882, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57464027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28732010 + 28732011.

It is an arithmetic number, because the mean of its divisors is an integer number (28732011).

Almost surely, 2^57464021 is an apocalyptic number.

It is an amenable number.

57464021 is a deficient number, since it is larger than the sum of its proper divisors (1).

57464021 is an equidigital number, since it uses as much as digits as its factorization.

57464021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 57464021 is about 7580.5026878169. The cubic root of 57464021 is about 385.8916109535.

The spelling of 57464021 in words is "fifty-seven million, four hundred sixty-four thousand, twenty-one".