51455522403 has 28 divisors (see below), whose sum is σ = 78789490848. Its totient is φ = 33573793680.

The previous prime is 51455522383. The next prime is 51455522501. The reversal of 51455522403 is 30422555415.

51455522403 is a `hidden beast` number, since 51 + 45 + 5 + 522 + 40 + 3 = 666.

It is not a de Polignac number, because 51455522403 - 2²⁰ = 51454473827 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51455526403) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 716628 + ... + 785153.

Almost surely, 2^51455522403 is an apocalyptic number.

51455522403 is a deficient number, since it is larger than the sum of its proper divisors (27333968445).

51455522403 is an equidigital number, since it uses as much as digits as its factorization.

51455522403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1501846 (or 1501831 counting only the distinct ones).

The product of its (nonzero) digits is 120000, while the sum is 36.

The spelling of 51455522403 in words is "fifty-one billion, four hundred fifty-five million, five hundred twenty-two thousand, four hundred three".