52015252391 has 2 divisors, whose sum is σ = 52015252392. Its totient is φ = 52015252390.

The previous prime is 52015252369. The next prime is 52015252447. The reversal of 52015252391 is 19325251025.

52015252391 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-52015252391 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (52015252351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26007626195 + 26007626196.

It is an arithmetic number, because the mean of its divisors is an integer number (26007626196).

Almost surely, 2^52015252391 is an apocalyptic number.

52015252391 is a deficient number, since it is larger than the sum of its proper divisors (1).

52015252391 is an equidigital number, since it uses as much as digits as its factorization.

52015252391 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27000, while the sum is 35.

The spelling of 52015252391 in words is "fifty-two billion, fifteen million, two hundred fifty-two thousand, three hundred ninety-one".