252511397 has 2 divisors, whose sum is σ = 252511398. Its totient is φ = 252511396.

The previous prime is 252511373. The next prime is 252511417. The reversal of 252511397 is 793115252.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 252460321 + 51076 = 15889^2 + 226^2 .

It is a cyclic number.

It is not a de Polignac number, because 252511397 - 2¹⁰ = 252510373 is a prime.

It is a super-2 number, since 2×252511397² = 127524011229783218, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (252510397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126255698 + 126255699.

It is an arithmetic number, because the mean of its divisors is an integer number (126255699).

Almost surely, 2^252511397 is an apocalyptic number.

It is an amenable number.

252511397 is a deficient number, since it is larger than the sum of its proper divisors (1).

252511397 is an equidigital number, since it uses as much as digits as its factorization.

252511397 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18900, while the sum is 35.

The square root of 252511397 is about 15890.6071941886. The cubic root of 252511397 is about 632.0629418766.

The spelling of 252511397 in words is "two hundred fifty-two million, five hundred eleven thousand, three hundred ninety-seven".