52507409 has 2 divisors, whose sum is σ = 52507410. Its totient is φ = 52507408.

The previous prime is 52507391. The next prime is 52507417. The reversal of 52507409 is 90470525.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 48790225 + 3717184 = 6985^2 + 1928^2 .

It is a cyclic number.

It is not a de Polignac number, because 52507409 - 2¹² = 52503313 is a prime.

It is not a weakly prime, because it can be changed into another prime (52507489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26253704 + 26253705.

It is an arithmetic number, because the mean of its divisors is an integer number (26253705).

Almost surely, 2^52507409 is an apocalyptic number.

It is an amenable number.

52507409 is a deficient number, since it is larger than the sum of its proper divisors (1).

52507409 is an equidigital number, since it uses as much as digits as its factorization.

52507409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12600, while the sum is 32.

The square root of 52507409 is about 7246.1996246308. The cubic root of 52507409 is about 374.4612328357.

The spelling of 52507409 in words is "fifty-two million, five hundred seven thousand, four hundred nine".