252455551 has 4 divisors (see below), whose sum is σ = 259278712. Its totient is φ = 245632392.

The previous prime is 252455519. The next prime is 252455561. The reversal of 252455551 is 155554252.

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 252455551 - 2⁵ = 252455519 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252455561) 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, 3411525 + ... + 3411598.

It is an arithmetic number, because the mean of its divisors is an integer number (64819678).

Almost surely, 2^252455551 is an apocalyptic number.

252455551 is a deficient number, since it is larger than the sum of its proper divisors (6823161).

252455551 is an equidigital number, since it uses as much as digits as its factorization.

252455551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6823160.

The product of its digits is 50000, while the sum is 34.

The square root of 252455551 is about 15888.8498954455. The cubic root of 252455551 is about 632.0163422776.

The spelling of 252455551 in words is "two hundred fifty-two million, four hundred fifty-five thousand, five hundred fifty-one".