251104052254421 has 4 divisors (see below), whose sum is σ = 252030635473344. Its totient is φ = 250177469035500.

The previous prime is 251104052254357. The next prime is 251104052254423. The reversal of 251104052254421 is 124452250401152.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 251104052254421 - 2⁶ = 251104052254357 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 (251104052254423) 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, 463291609055 + ... + 463291609596.

It is an arithmetic number, because the mean of its divisors is an integer number (63007658868336).

Almost surely, 2^{251104052254421} is an apocalyptic number.

It is an amenable number.

251104052254421 is a deficient number, since it is larger than the sum of its proper divisors (926583218923).

251104052254421 is an equidigital number, since it uses as much as digits as its factorization.

251104052254421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 926583218922.

The product of its (nonzero) digits is 128000, while the sum is 38.

The spelling of 251104052254421 in words is "two hundred fifty-one trillion, one hundred four billion, fifty-two million, two hundred fifty-four thousand, four hundred twenty-one".