51540757254 has 48 divisors (see below), whose sum is σ = 130032762912. Its totient is φ = 14448081024.

The previous prime is 51540757241. The next prime is 51540757273. The reversal of 51540757254 is 45275704515.

51540757254 is a `hidden beast` number, since 5 + 1 + 540 + 7 + 57 + 2 + 54 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3852319 + ... + 3865674.

It is an arithmetic number, because the mean of its divisors is an integer number (2709015894).

Almost surely, 2^51540757254 is an apocalyptic number.

51540757254 is an abundant number, since it is smaller than the sum of its proper divisors (78492005658).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51540757254 is a wasteful number, since it uses less digits than its factorization.

51540757254 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7718061 (or 7718058 counting only the distinct ones).

The product of its (nonzero) digits is 980000, while the sum is 45.

The spelling of 51540757254 in words is "fifty-one billion, five hundred forty million, seven hundred fifty-seven thousand, two hundred fifty-four".