55451955121 has 8 divisors (see below), whose sum is σ = 58717315584. Its totient is φ = 52186981440.

The previous prime is 55451955109. The next prime is 55451955149. The reversal of 55451955121 is 12155915455.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55451955121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55451955101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 230056 + ... + 404758.

It is an arithmetic number, because the mean of its divisors is an integer number (7339664448).

Almost surely, 2^55451955121 is an apocalyptic number.

It is an amenable number.

55451955121 is a deficient number, since it is larger than the sum of its proper divisors (3265360463).

55451955121 is a wasteful number, since it uses less digits than its factorization.

55451955121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193391.

The product of its digits is 225000, while the sum is 43.

The spelling of 55451955121 in words is "fifty-five billion, four hundred fifty-one million, nine hundred fifty-five thousand, one hundred twenty-one".