55622565021 has 16 divisors (see below), whose sum is σ = 76582748160. Its totient is φ = 35872888560.

The previous prime is 55622565017. The next prime is 55622565029. The reversal of 55622565021 is 12056522655.

It is not a de Polignac number, because 55622565021 - 2² = 55622565017 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55622565029) 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 15 ways as a sum of consecutive naturals, for example, 163876 + ... + 371618.

It is an arithmetic number, because the mean of its divisors is an integer number (4786421760).

Almost surely, 2^55622565021 is an apocalyptic number.

It is an amenable number.

55622565021 is a deficient number, since it is larger than the sum of its proper divisors (20960183139).

55622565021 is a wasteful number, since it uses less digits than its factorization.

55622565021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210656.

The product of its (nonzero) digits is 180000, while the sum is 39.

The spelling of 55622565021 in words is "fifty-five billion, six hundred twenty-two million, five hundred sixty-five thousand, twenty-one".