51504331754 has 4 divisors (see below), whose sum is σ = 77256497634. Its totient is φ = 25752165876.

The previous prime is 51504331729. The next prime is 51504331777. The reversal of 51504331754 is 45713340515.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 35523579529 + 15980752225 = 188477^2 + 126415^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12876082937 + ... + 12876082940.

Almost surely, 2^51504331754 is an apocalyptic number.

51504331754 is a deficient number, since it is larger than the sum of its proper divisors (25752165880).

51504331754 is a wasteful number, since it uses less digits than its factorization.

51504331754 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25752165879.

The product of its (nonzero) digits is 126000, while the sum is 38.

The spelling of 51504331754 in words is "fifty-one billion, five hundred four million, three hundred thirty-one thousand, seven hundred fifty-four".