55622889 has 24 divisors (see below), whose sum is σ = 95860320. Its totient is φ = 31783752.

The previous prime is 55622869. The next prime is 55622909. The reversal of 55622889 is 98822655.

55622889 is a `hidden beast` number, since 5 + 562 + 2 + 8 + 89 = 666.

It is an interprime number because it is at equal distance from previous prime (55622869) and next prime (55622909).

It is not a de Polignac number, because 55622889 - 2¹¹ = 55620841 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55622839) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19699 + ... + 22344.

It is an arithmetic number, because the mean of its divisors is an integer number (3994180).

Almost surely, 2^55622889 is an apocalyptic number.

It is an amenable number.

55622889 is a deficient number, since it is larger than the sum of its proper divisors (40237431).

55622889 is a wasteful number, since it uses less digits than its factorization.

55622889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42066 (or 42053 counting only the distinct ones).

The product of its digits is 345600, while the sum is 45.

The square root of 55622889 is about 7458.0754219839. The cubic root of 55622889 is about 381.7255070533.

The spelling of 55622889 in words is "fifty-five million, six hundred twenty-two thousand, eight hundred eighty-nine".