55421012455 has 16 divisors (see below), whose sum is σ = 68811511680. Its totient is φ = 42799857408.

The previous prime is 55421012447. The next prime is 55421012477.

55421012455 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 55421012455 - 2³ = 55421012447 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 55421012455.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 799459 + ... + 866011.

It is an arithmetic number, because the mean of its divisors is an integer number (4300719480).

Almost surely, 2^55421012455 is an apocalyptic number.

55421012455 is a deficient number, since it is larger than the sum of its proper divisors (13390499225).

55421012455 is a wasteful number, since it uses less digits than its factorization.

55421012455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72330.

The product of its (nonzero) digits is 40000, while the sum is 34.

It can be divided in two parts, 554210 and 12455, that added together give a palindrome (566665).

The spelling of 55421012455 in words is "fifty-five billion, four hundred twenty-one million, twelve thousand, four hundred fifty-five".