51456222455 has 32 divisors (see below), whose sum is σ = 73250982720. Its totient is φ = 34269419520.

The previous prime is 51456222451. The next prime is 51456222457. The reversal of 51456222455 is 55422265415.

It is not a de Polignac number, because 51456222455 - 2² = 51456222451 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51456222451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 709100 + ... + 778289.

It is an arithmetic number, because the mean of its divisors is an integer number (2289093210).

Almost surely, 2^51456222455 is an apocalyptic number.

51456222455 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

51456222455 is a deficient number, since it is larger than the sum of its proper divisors (21794760265).

51456222455 is a wasteful number, since it uses less digits than its factorization.

51456222455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1487459.

The product of its digits is 480000, while the sum is 41.

The spelling of 51456222455 in words is "fifty-one billion, four hundred fifty-six million, two hundred twenty-two thousand, four hundred fifty-five".