51255523455 has 16 divisors (see below), whose sum is σ = 82012258944. Its totient is φ = 27335138720.

The previous prime is 51255523453. The next prime is 51255523511. The reversal of 51255523455 is 55432555215.

It is not a de Polignac number, because 51255523455 - 2¹ = 51255523453 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51255523453) 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, 401332 + ... + 513398.

It is an arithmetic number, because the mean of its divisors is an integer number (5125766184).

Almost surely, 2^51255523455 is an apocalyptic number.

51255523455 is a deficient number, since it is larger than the sum of its proper divisors (30756735489).

51255523455 is a wasteful number, since it uses less digits than its factorization.

51255523455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142566.

The product of its digits is 750000, while the sum is 42.

The spelling of 51255523455 in words is "fifty-one billion, two hundred fifty-five million, five hundred twenty-three thousand, four hundred fifty-five".