51457252544 has 28 divisors (see below), whose sum is σ = 102219117888. Its totient is φ = 25701254400.

The previous prime is 51457252529. The next prime is 51457252547. The reversal of 51457252544 is 44525275415.

It is a junction number, because it is equal to n+sod(n) for n = 51457252495 and 51457252504.

It is not an unprimeable number, because it can be changed into a prime (51457252547) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 366992 + ... + 487439.

Almost surely, 2^51457252544 is an apocalyptic number.

It is an amenable number.

51457252544 is a deficient number, since it is larger than the sum of its proper divisors (50761865344).

51457252544 is an equidigital number, since it uses as much as digits as its factorization.

51457252544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 855384 (or 855374 counting only the distinct ones).

The product of its digits is 1120000, while the sum is 44.

The spelling of 51457252544 in words is "fifty-one billion, four hundred fifty-seven million, two hundred fifty-two thousand, five hundred forty-four".