51894511757 has 8 divisors (see below), whose sum is σ = 56623647360. Its totient is φ = 47167284960.

The previous prime is 51894511703. The next prime is 51894511777. The reversal of 51894511757 is 75711549815.

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

It is a cyclic number.

It is not a de Polignac number, because 51894511757 - 2²⁸ = 51626076301 is a prime.

It is a super-2 number, since 2×51894511757² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51894511699 and 51894511708.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51894511777) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 420053 + ... + 529370.

It is an arithmetic number, because the mean of its divisors is an integer number (7077955920).

Almost surely, 2^51894511757 is an apocalyptic number.

It is an amenable number.

51894511757 is a deficient number, since it is larger than the sum of its proper divisors (4729135603).

51894511757 is a wasteful number, since it uses less digits than its factorization.

51894511757 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 954403.

The product of its digits is 1764000, while the sum is 53.

The spelling of 51894511757 in words is "fifty-one billion, eight hundred ninety-four million, five hundred eleven thousand, seven hundred fifty-seven".