252385291 has 4 divisors (see below), whose sum is σ = 260526784. Its totient is φ = 244243800.

The previous prime is 252385277. The next prime is 252385297. The reversal of 252385291 is 192583252.

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 252385291 - 2¹⁵ = 252352523 is a prime.

It is a super-2 number, since 2×252385291² = 127396670226309362, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 252385291.

It is not an unprimeable number, because it can be changed into a prime (252385297) 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, 4070700 + ... + 4070761.

It is an arithmetic number, because the mean of its divisors is an integer number (65131696).

Almost surely, 2^252385291 is an apocalyptic number.

252385291 is a deficient number, since it is larger than the sum of its proper divisors (8141493).

252385291 is an equidigital number, since it uses as much as digits as its factorization.

252385291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8141492.

The product of its digits is 43200, while the sum is 37.

The square root of 252385291 is about 15886.6387571443. The cubic root of 252385291 is about 631.9577054362.

The spelling of 252385291 in words is "two hundred fifty-two million, three hundred eighty-five thousand, two hundred ninety-one".