51280055402 has 8 divisors (see below), whose sum is σ = 76921395012. Its totient is φ = 25639590400.

The previous prime is 51280055389. The next prime is 51280055429. The reversal of 51280055402 is 20455008215.

51280055402 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Cunningham number, because it is equal to 226451²+1.

It can be written as a sum of positive squares in 2 ways, for example, as 51280055401 + 1 = 226451^2 + 1^2 .

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

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, 44249 + ... + 323292.

Almost surely, 2^51280055402 is an apocalyptic number.

51280055402 is a deficient number, since it is larger than the sum of its proper divisors (25641339610).

51280055402 is a wasteful number, since it uses less digits than its factorization.

51280055402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 437304.

The product of its (nonzero) digits is 16000, while the sum is 32.

The spelling of 51280055402 in words is "fifty-one billion, two hundred eighty million, fifty-five thousand, four hundred two".