52210409 has 2 divisors, whose sum is σ = 52210410. Its totient is φ = 52210408.

The previous prime is 52210393. The next prime is 52210421. The reversal of 52210409 is 90401225.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 49042009 + 3168400 = 7003^2 + 1780^2 .

It is a cyclic number.

It is not a de Polignac number, because 52210409 - 2⁴ = 52210393 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (52210429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26105204 + 26105205.

It is an arithmetic number, because the mean of its divisors is an integer number (26105205).

Almost surely, 2^52210409 is an apocalyptic number.

It is an amenable number.

52210409 is a deficient number, since it is larger than the sum of its proper divisors (1).

52210409 is an equidigital number, since it uses as much as digits as its factorization.

52210409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 52210409 is about 7225.6770617016. The cubic root of 52210409 is about 373.7538702000.

The spelling of 52210409 in words is "fifty-two million, two hundred ten thousand, four hundred nine".