252215651 has 2 divisors, whose sum is σ = 252215652. Its totient is φ = 252215650.

The previous prime is 252215647. The next prime is 252215699. The reversal of 252215651 is 156512252.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 252215651 - 2² = 252215647 is a prime.

It is a super-2 number, since 2×252215651² = 127225469218707602, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (252215611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126107825 + 126107826.

It is an arithmetic number, because the mean of its divisors is an integer number (126107826).

Almost surely, 2^252215651 is an apocalyptic number.

252215651 is a deficient number, since it is larger than the sum of its proper divisors (1).

252215651 is an equidigital number, since it uses as much as digits as its factorization.

252215651 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6000, while the sum is 29.

The square root of 252215651 is about 15881.2987819007. The cubic root of 252215651 is about 631.8160842229.

The spelling of 252215651 in words is "two hundred fifty-two million, two hundred fifteen thousand, six hundred fifty-one".