252315047 has 2 divisors, whose sum is σ = 252315048. Its totient is φ = 252315046.

The previous prime is 252315023. The next prime is 252315067. The reversal of 252315047 is 740513252.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 252315047 - 2¹⁸ = 252052903 is a prime.

It is a super-2 number, since 2×252315047² = 127325765885224418, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (252315017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126157523 + 126157524.

It is an arithmetic number, because the mean of its divisors is an integer number (126157524).

Almost surely, 2^252315047 is an apocalyptic number.

252315047 is a deficient number, since it is larger than the sum of its proper divisors (1).

252315047 is an equidigital number, since it uses as much as digits as its factorization.

252315047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8400, while the sum is 29.

The square root of 252315047 is about 15884.4278146869. The cubic root of 252315047 is about 631.8990710683.

Adding to 252315047 its reverse (740513252), we get a palindrome (992828299).

The spelling of 252315047 in words is "two hundred fifty-two million, three hundred fifteen thousand, forty-seven".