55051311251 has 8 divisors (see below), whose sum is σ = 56453954400. Its totient is φ = 53666092480.

The previous prime is 55051311199. The next prime is 55051311253. The reversal of 55051311251 is 15211315055.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55051311251 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55051311253) 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, 4349696 + ... + 4362333.

It is an arithmetic number, because the mean of its divisors is an integer number (7056744300).

Almost surely, 2^55051311251 is an apocalyptic number.

55051311251 is a deficient number, since it is larger than the sum of its proper divisors (1402643149).

55051311251 is an equidigital number, since it uses as much as digits as its factorization.

55051311251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8712189.

The product of its (nonzero) digits is 3750, while the sum is 29.

The spelling of 55051311251 in words is "fifty-five billion, fifty-one million, three hundred eleven thousand, two hundred fifty-one".