252537805447 has 2 divisors, whose sum is σ = 252537805448. Its totient is φ = 252537805446.

The previous prime is 252537805427. The next prime is 252537805543. The reversal of 252537805447 is 744508735252.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-252537805447 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 252537805394 and 252537805403.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (252537805427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126268902723 + 126268902724.

It is an arithmetic number, because the mean of its divisors is an integer number (126268902724).

Almost surely, 2^252537805447 is an apocalyptic number.

252537805447 is a deficient number, since it is larger than the sum of its proper divisors (1).

252537805447 is an equidigital number, since it uses as much as digits as its factorization.

252537805447 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9408000, while the sum is 52.

The spelling of 252537805447 in words is "two hundred fifty-two billion, five hundred thirty-seven million, eight hundred five thousand, four hundred forty-seven".