52257479 has 2 divisors, whose sum is σ = 52257480. Its totient is φ = 52257478.

The previous prime is 52257451. The next prime is 52257509. The reversal of 52257479 is 97475225.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 52257479 - 2⁸ = 52257223 is a prime.

It is a super-2 number, since 2×52257479² = 5461688222870882, which contains 22 as substring.

It is a Sophie Germain 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 (52257379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26128739 + 26128740.

It is an arithmetic number, because the mean of its divisors is an integer number (26128740).

Almost surely, 2^52257479 is an apocalyptic number.

52257479 is a deficient number, since it is larger than the sum of its proper divisors (1).

52257479 is an equidigital number, since it uses as much as digits as its factorization.

52257479 is an evil number, because the sum of its binary digits is even.

The product of its digits is 176400, while the sum is 41.

The square root of 52257479 is about 7228.9334621367. The cubic root of 52257479 is about 373.8661550286.

The spelling of 52257479 in words is "fifty-two million, two hundred fifty-seven thousand, four hundred seventy-nine".