51757149874 has 8 divisors (see below), whose sum is σ = 80312818860. Its totient is φ = 24986210256.

The previous prime is 51757149809. The next prime is 51757149881. The reversal of 51757149874 is 47894175715.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 51608480625 + 148669249 = 227175^2 + 12193^2 .

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

It is a Harshad number since it is a multiple of its sum of digits (58), and also a Moran number because the ratio is a prime number: 892364653 = 51757149874 / (5 + 1 + 7 + 5 + 7 + 1 + 4 + 9 + 8 + 7 + 4).

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, 446182269 + ... + 446182384.

Almost surely, 2^51757149874 is an apocalyptic number.

51757149874 is a deficient number, since it is larger than the sum of its proper divisors (28555668986).

51757149874 is a wasteful number, since it uses less digits than its factorization.

51757149874 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 892364684.

The product of its digits is 9878400, while the sum is 58.

The spelling of 51757149874 in words is "fifty-one billion, seven hundred fifty-seven million, one hundred forty-nine thousand, eight hundred seventy-four".