52957621 has 2 divisors, whose sum is σ = 52957622. Its totient is φ = 52957620.

The previous prime is 52957607. The next prime is 52957627. The reversal of 52957621 is 12675925.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 37638225 + 15319396 = 6135^2 + 3914^2 .

It is a cyclic number.

It is not a de Polignac number, because 52957621 - 2⁵ = 52957589 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (52957627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26478810 + 26478811.

It is an arithmetic number, because the mean of its divisors is an integer number (26478811).

Almost surely, 2^52957621 is an apocalyptic number.

It is an amenable number.

52957621 is a deficient number, since it is larger than the sum of its proper divisors (1).

52957621 is an equidigital number, since it uses as much as digits as its factorization.

52957621 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 37800, while the sum is 37.

The square root of 52957621 is about 7277.1987055460. The cubic root of 52957621 is about 375.5284307165.

The spelling of 52957621 in words is "fifty-two million, nine hundred fifty-seven thousand, six hundred twenty-one".