252591813553 has 2 divisors, whose sum is σ = 252591813554. Its totient is φ = 252591813552.

The previous prime is 252591813491. The next prime is 252591813557. The reversal of 252591813553 is 355318195252.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 128269989904 + 124321823649 = 358148^2 + 352593^2 .

It is a cyclic number.

It is not a de Polignac number, because 252591813553 - 2⁹ = 252591813041 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 252591813497 and 252591813506.

It is not a weakly prime, because it can be changed into another prime (252591813557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126295906776 + 126295906777.

It is an arithmetic number, because the mean of its divisors is an integer number (126295906777).

Almost surely, 2^252591813553 is an apocalyptic number.

It is an amenable number.

252591813553 is a deficient number, since it is larger than the sum of its proper divisors (1).

252591813553 is an equidigital number, since it uses as much as digits as its factorization.

252591813553 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1620000, while the sum is 49.

The spelling of 252591813553 in words is "two hundred fifty-two billion, five hundred ninety-one million, eight hundred thirteen thousand, five hundred fifty-three".