52515979 has 2 divisors, whose sum is σ = 52515980. Its totient is φ = 52515978.

The previous prime is 52515973. The next prime is 52515997. The reversal of 52515979 is 97951525.

It is a happy number.

Together with next prime (52515997) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 52515979 - 2⁷ = 52515851 is a prime.

It is not a weakly prime, because it can be changed into another prime (52515973) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26257989 + 26257990.

It is an arithmetic number, because the mean of its divisors is an integer number (26257990).

Almost surely, 2^52515979 is an apocalyptic number.

52515979 is a deficient number, since it is larger than the sum of its proper divisors (1).

52515979 is an equidigital number, since it uses as much as digits as its factorization.

52515979 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 141750, while the sum is 43.

The square root of 52515979 is about 7246.7909449632. The cubic root of 52515979 is about 374.4816042985.

The spelling of 52515979 in words is "fifty-two million, five hundred fifteen thousand, nine hundred seventy-nine".