52515917 has 2 divisors, whose sum is σ = 52515918. Its totient is φ = 52515916.

The previous prime is 52515899. The next prime is 52515919. The reversal of 52515917 is 71951525.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 52113961 + 401956 = 7219^2 + 634^2 .

It is a cyclic number.

It is not a de Polignac number, because 52515917 - 2²² = 48321613 is a prime.

Together with 52515919, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (52515919) 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, 26257958 + 26257959.

It is an arithmetic number, because the mean of its divisors is an integer number (26257959).

Almost surely, 2^52515917 is an apocalyptic number.

It is an amenable number.

52515917 is a deficient number, since it is larger than the sum of its proper divisors (1).

52515917 is an equidigital number, since it uses as much as digits as its factorization.

52515917 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15750, while the sum is 35.

The square root of 52515917 is about 7246.7866672064. The cubic root of 52515917 is about 374.4814569283.

The spelling of 52515917 in words is "fifty-two million, five hundred fifteen thousand, nine hundred seventeen".