252891457391 has 8 divisors (see below), whose sum is σ = 253289752704. Its totient is φ = 252493245400.

The previous prime is 252891457381. The next prime is 252891457397. The reversal of 252891457391 is 193754198252.

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

It is a cyclic number.

It is not a de Polignac number, because 252891457391 - 2²² = 252887263087 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 (252891457397) 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, 9173270 + ... + 9200796.

It is an arithmetic number, because the mean of its divisors is an integer number (31661219088).

Almost surely, 2^252891457391 is an apocalyptic number.

252891457391 is a deficient number, since it is larger than the sum of its proper divisors (398295313).

252891457391 is a wasteful number, since it uses less digits than its factorization.

252891457391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41661.

The product of its digits is 5443200, while the sum is 56.

The spelling of 252891457391 in words is "two hundred fifty-two billion, eight hundred ninety-one million, four hundred fifty-seven thousand, three hundred ninety-one".