55514895221 has 4 divisors (see below), whose sum is σ = 55592107200. Its totient is φ = 55437683244.

The previous prime is 55514895217. The next prime is 55514895239. The reversal of 55514895221 is 12259841555.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 55514895221 - 2² = 55514895217 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 (55514895251) 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, 38604911 + ... + 38606348.

It is an arithmetic number, because the mean of its divisors is an integer number (13898026800).

Almost surely, 2^55514895221 is an apocalyptic number.

It is an amenable number.

55514895221 is a deficient number, since it is larger than the sum of its proper divisors (77211979).

55514895221 is an equidigital number, since it uses as much as digits as its factorization.

55514895221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77211978.

The product of its digits is 720000, while the sum is 47.

The spelling of 55514895221 in words is "fifty-five billion, five hundred fourteen million, eight hundred ninety-five thousand, two hundred twenty-one".