252291251 has 4 divisors (see below), whose sum is σ = 252351600. Its totient is φ = 252230904.

The previous prime is 252291229. The next prime is 252291287. The reversal of 252291251 is 152192252.

252291251 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-252291251 is a prime.

It is a super-2 number, since 2×252291251² = 127301750662290002, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (252291551) 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, 23396 + ... + 32433.

It is an arithmetic number, because the mean of its divisors is an integer number (63087900).

Almost surely, 2^252291251 is an apocalyptic number.

252291251 is a deficient number, since it is larger than the sum of its proper divisors (60349).

252291251 is an equidigital number, since it uses as much as digits as its factorization.

252291251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60348.

The product of its digits is 3600, while the sum is 29.

The square root of 252291251 is about 15883.6787615464. The cubic root of 252291251 is about 631.8792055031.

The spelling of 252291251 in words is "two hundred fifty-two million, two hundred ninety-one thousand, two hundred fifty-one".