52215479 has 2 divisors, whose sum is σ = 52215480. Its totient is φ = 52215478.

The previous prime is 52215437. The next prime is 52215491. The reversal of 52215479 is 97451225.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 52215479 - 2⁸ = 52215223 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (52215409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26107739 + 26107740.

It is an arithmetic number, because the mean of its divisors is an integer number (26107740).

Almost surely, 2^52215479 is an apocalyptic number.

52215479 is a deficient number, since it is larger than the sum of its proper divisors (1).

52215479 is an equidigital number, since it uses as much as digits as its factorization.

52215479 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25200, while the sum is 35.

The square root of 52215479 is about 7226.0278853600. The cubic root of 52215479 is about 373.7659678565.

The spelling of 52215479 in words is "fifty-two million, two hundred fifteen thousand, four hundred seventy-nine".