51865291254 has 32 divisors (see below), whose sum is σ = 118742688000. Its totient is φ = 14794473312.

The previous prime is 51865291243. The next prime is 51865291259. The reversal of 51865291254 is 45219256815.

51865291254 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51865291259) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 981504 + ... + 1032995.

It is an arithmetic number, because the mean of its divisors is an integer number (3710709000).

Almost surely, 2^51865291254 is an apocalyptic number.

51865291254 is an abundant number, since it is smaller than the sum of its proper divisors (66877396746).

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

51865291254 is a wasteful number, since it uses less digits than its factorization.

51865291254 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2015124.

The product of its digits is 864000, while the sum is 48.

It can be divided in two parts, 518652 and 91254, that added together give a palindrome (609906).

The spelling of 51865291254 in words is "fifty-one billion, eight hundred sixty-five million, two hundred ninety-one thousand, two hundred fifty-four".