252672521 has 2 divisors, whose sum is σ = 252672522. Its totient is φ = 252672520.

The previous prime is 252672481. The next prime is 252672523. The reversal of 252672521 is 125276252.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 128572921 + 124099600 = 11339^2 + 11140^2 .

It is a cyclic number.

It is not a de Polignac number, because 252672521 - 2²⁶ = 185563657 is a prime.

Together with 252672523, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (252672523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126336260 + 126336261.

It is an arithmetic number, because the mean of its divisors is an integer number (126336261).

Almost surely, 2^252672521 is an apocalyptic number.

It is an amenable number.

252672521 is a deficient number, since it is larger than the sum of its proper divisors (1).

252672521 is an equidigital number, since it uses as much as digits as its factorization.

252672521 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16800, while the sum is 32.

The square root of 252672521 is about 15895.6761730981. The cubic root of 252672521 is about 632.1973501414.

The spelling of 252672521 in words is "two hundred fifty-two million, six hundred seventy-two thousand, five hundred twenty-one".