252898961551 has 4 divisors (see below), whose sum is σ = 267775371072. Its totient is φ = 238022552032.

The previous prime is 252898961537. The next prime is 252898961561. The reversal of 252898961551 is 155169898252.

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 252898961551 - 2¹¹ = 252898959503 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 252898961551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252898961561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7438204735 + ... + 7438204768.

It is an arithmetic number, because the mean of its divisors is an integer number (66943842768).

Almost surely, 2^252898961551 is an apocalyptic number.

252898961551 is a deficient number, since it is larger than the sum of its proper divisors (14876409521).

252898961551 is a wasteful number, since it uses less digits than its factorization.

252898961551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14876409520.

The product of its digits is 15552000, while the sum is 61.

The spelling of 252898961551 in words is "two hundred fifty-two billion, eight hundred ninety-eight million, nine hundred sixty-one thousand, five hundred fifty-one".