252491707 has 8 divisors (see below), whose sum is σ = 272885760. Its totient is φ = 232236480.

The previous prime is 252491699. The next prime is 252491713. The reversal of 252491707 is 707194252.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 252491707 - 2³ = 252491699 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (252491747) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30907 + ... + 38212.

It is an arithmetic number, because the mean of its divisors is an integer number (34110720).

Almost surely, 2^252491707 is an apocalyptic number.

252491707 is a deficient number, since it is larger than the sum of its proper divisors (20394053).

252491707 is a wasteful number, since it uses less digits than its factorization.

252491707 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69413.

The product of its (nonzero) digits is 35280, while the sum is 37.

The square root of 252491707 is about 15889.9876337271. The cubic root of 252491707 is about 632.0465127267.

The spelling of 252491707 in words is "two hundred fifty-two million, four hundred ninety-one thousand, seven hundred seven".