252417731 has 4 divisors (see below), whose sum is σ = 254733600. Its totient is φ = 250101864.

The previous prime is 252417701. The next prime is 252417757. The reversal of 252417731 is 137714252.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 252417731 - 2⁶ = 252417667 is a prime.

It is a super-2 number, since 2×252417731² = 127429421846376722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (252417701) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1157771 + ... + 1157988.

It is an arithmetic number, because the mean of its divisors is an integer number (63683400).

Almost surely, 2^252417731 is an apocalyptic number.

252417731 is a deficient number, since it is larger than the sum of its proper divisors (2315869).

252417731 is a wasteful number, since it uses less digits than its factorization.

252417731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2315868.

The product of its digits is 11760, while the sum is 32.

The square root of 252417731 is about 15887.6597080879. The cubic root of 252417731 is about 631.9847802175.

The spelling of 252417731 in words is "two hundred fifty-two million, four hundred seventeen thousand, seven hundred thirty-one".