51556048894 has 8 divisors (see below), whose sum is σ = 88381798128. Its totient is φ = 22095449520.

The previous prime is 51556048879. The next prime is 51556048909. The reversal of 51556048894 is 49884065515.

It is an interprime number because it is at equal distance from previous prime (51556048879) and next prime (51556048909).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1841287447 + ... + 1841287474.

It is an arithmetic number, because the mean of its divisors is an integer number (11047724766).

Almost surely, 2^51556048894 is an apocalyptic number.

51556048894 is a deficient number, since it is larger than the sum of its proper divisors (36825749234).

51556048894 is a wasteful number, since it uses less digits than its factorization.

51556048894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3682574930.

The product of its (nonzero) digits is 6912000, while the sum is 55.

The spelling of 51556048894 in words is "fifty-one billion, five hundred fifty-six million, forty-eight thousand, eight hundred ninety-four".