252517747 has 2 divisors, whose sum is σ = 252517748. Its totient is φ = 252517746.

The previous prime is 252517721. The next prime is 252517757. The reversal of 252517747 is 747715252.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 252517747 - 2¹⁵ = 252484979 is a prime.

It is not a weakly prime, because it can be changed into another prime (252517717) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126258873 + 126258874.

It is an arithmetic number, because the mean of its divisors is an integer number (126258874).

Almost surely, 2^252517747 is an apocalyptic number.

252517747 is a deficient number, since it is larger than the sum of its proper divisors (1).

252517747 is an equidigital number, since it uses as much as digits as its factorization.

252517747 is an evil number, because the sum of its binary digits is even.

The product of its digits is 137200, while the sum is 40.

The square root of 252517747 is about 15890.8069964996. The cubic root of 252517747 is about 632.0682400745.

The spelling of 252517747 in words is "two hundred fifty-two million, five hundred seventeen thousand, seven hundred forty-seven".