52413721 has 2 divisors, whose sum is σ = 52413722. Its totient is φ = 52413720.

The previous prime is 52413709. The next prime is 52413727. The reversal of 52413721 is 12731425.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 48108096 + 4305625 = 6936^2 + 2075^2 .

It is a cyclic number.

It is not a de Polignac number, because 52413721 - 2⁷ = 52413593 is a prime.

It is not a weakly prime, because it can be changed into another prime (52413727) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26206860 + 26206861.

It is an arithmetic number, because the mean of its divisors is an integer number (26206861).

Almost surely, 2^52413721 is an apocalyptic number.

It is an amenable number.

52413721 is a deficient number, since it is larger than the sum of its proper divisors (1).

52413721 is an equidigital number, since it uses as much as digits as its factorization.

52413721 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1680, while the sum is 25.

The square root of 52413721 is about 7239.7321083035. The cubic root of 52413721 is about 374.2383854887.

The spelling of 52413721 in words is "fifty-two million, four hundred thirteen thousand, seven hundred twenty-one".