55442624455 has 4 divisors (see below), whose sum is σ = 66531149352. Its totient is φ = 44354099560.

The previous prime is 55442624431. The next prime is 55442624459.

It is a happy number.

55442624455 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 55442624455 - 2²⁹ = 54905753543 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55442624459) 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, 5544262441 + ... + 5544262450.

It is an arithmetic number, because the mean of its divisors is an integer number (16632787338).

Almost surely, 2^55442624455 is an apocalyptic number.

55442624455 is a deficient number, since it is larger than the sum of its proper divisors (11088524897).

55442624455 is a wasteful number, since it uses less digits than its factorization.

55442624455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11088524896.

The product of its digits is 3840000, while the sum is 46.

Adding to 55442624455 its product of digits (3840000), we get a palindrome (55446464455).

The spelling of 55442624455 in words is "fifty-five billion, four hundred forty-two million, six hundred twenty-four thousand, four hundred fifty-five".