51751975454 has 16 divisors (see below), whose sum is σ = 78406422768. Its totient is φ = 25616828352.

The previous prime is 51751975421. The next prime is 51751975481. The reversal of 51751975454 is 45457915715.

It is a happy number.

It is a super-2 number, since 2×51751975454² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 51751975396 and 51751975405.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 238514 + ... + 400490.

It is an arithmetic number, because the mean of its divisors is an integer number (4900401423).

Almost surely, 2^51751975454 is an apocalyptic number.

51751975454 is a deficient number, since it is larger than the sum of its proper divisors (26654447314).

51751975454 is a wasteful number, since it uses less digits than its factorization.

51751975454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163579.

The product of its digits is 4410000, while the sum is 53.

The spelling of 51751975454 in words is "fifty-one billion, seven hundred fifty-one million, nine hundred seventy-five thousand, four hundred fifty-four".