52222409 has 2 divisors, whose sum is σ = 52222410. Its totient is φ = 52222408.

The previous prime is 52222399. The next prime is 52222411. The reversal of 52222409 is 90422225.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 50055625 + 2166784 = 7075^2 + 1472^2 .

It is a cyclic number.

It is not a de Polignac number, because 52222409 - 2⁸ = 52222153 is a prime.

It is a Sophie Germain prime.

Together with 52222411, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (52222309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26111204 + 26111205.

It is an arithmetic number, because the mean of its divisors is an integer number (26111205).

Almost surely, 2^52222409 is an apocalyptic number.

It is an amenable number.

52222409 is a deficient number, since it is larger than the sum of its proper divisors (1).

52222409 is an equidigital number, since it uses as much as digits as its factorization.

52222409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 52222409 is about 7226.5073860061. The cubic root of 52222409 is about 373.7825024399.

The spelling of 52222409 in words is "fifty-two million, two hundred twenty-two thousand, four hundred nine".