252640851 has 8 divisors (see below), whose sum is σ = 336929424. Its totient is φ = 168389760.

The previous prime is 252640849. The next prime is 252640873. The reversal of 252640851 is 158046252.

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

It is not a de Polignac number, because 252640851 - 2¹ = 252640849 is a prime.

It is not an unprimeable number, because it can be changed into a prime (252640051) 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, 16815 + ... + 28071.

It is an arithmetic number, because the mean of its divisors is an integer number (42116178).

Almost surely, 2^252640851 is an apocalyptic number.

252640851 is a deficient number, since it is larger than the sum of its proper divisors (84288573).

252640851 is a wasteful number, since it uses less digits than its factorization.

252640851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18741.

The product of its (nonzero) digits is 19200, while the sum is 33.

The square root of 252640851 is about 15894.6799590303. The cubic root of 252640851 is about 632.1709358106.

The spelling of 252640851 in words is "two hundred fifty-two million, six hundred forty thousand, eight hundred fifty-one".