55221022894 has 16 divisors (see below), whose sum is σ = 87818371200. Its totient is φ = 25969141944.

The previous prime is 55221022891. The next prime is 55221022903. The reversal of 55221022894 is 49822012255.

It is a super-2 number, since 2×55221022894² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55221022891) 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, 5222002 + ... + 5232565.

It is an arithmetic number, because the mean of its divisors is an integer number (5488648200).

Almost surely, 2^55221022894 is an apocalyptic number.

55221022894 is a deficient number, since it is larger than the sum of its proper divisors (32597348306).

55221022894 is a wasteful number, since it uses less digits than its factorization.

55221022894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10454727.

The product of its (nonzero) digits is 115200, while the sum is 40.

The spelling of 55221022894 in words is "fifty-five billion, two hundred twenty-one million, twenty-two thousand, eight hundred ninety-four".