52515240997 has 2 divisors, whose sum is σ = 52515240998. Its totient is φ = 52515240996.

The previous prime is 52515240979. The next prime is 52515241013. The reversal of 52515240997 is 79904251525.

52515240997 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

Together with previous prime (52515240979) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 32744350116 + 19770890881 = 180954^2 + 140609^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-52515240997 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 52515240997.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (52515240907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26257620498 + 26257620499.

It is an arithmetic number, because the mean of its divisors is an integer number (26257620499).

Almost surely, 2^52515240997 is an apocalyptic number.

It is an amenable number.

52515240997 is a deficient number, since it is larger than the sum of its proper divisors (1).

52515240997 is an equidigital number, since it uses as much as digits as its factorization.

52515240997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1134000, while the sum is 49.

The spelling of 52515240997 in words is "fifty-two billion, five hundred fifteen million, two hundred forty thousand, nine hundred ninety-seven".