55522989 has 20 divisors (see below), whose sum is σ = 86550816. Its totient is φ = 35404776.

The previous prime is 55522981. The next prime is 55523009. The reversal of 55522989 is 98922555.

55522989 is a `hidden beast` number, since 5 + 552 + 2 + 98 + 9 = 666.

It is not a de Polignac number, because 55522989 - 2³ = 55522981 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55522981) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 13039 + ... + 16764.

Almost surely, 2^55522989 is an apocalyptic number.

It is an amenable number.

55522989 is a deficient number, since it is larger than the sum of its proper divisors (31027827).

55522989 is a wasteful number, since it uses less digits than its factorization.

55522989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29838 (or 29829 counting only the distinct ones).

The product of its digits is 324000, while the sum is 45.

The square root of 55522989 is about 7451.3749737884. The cubic root of 55522989 is about 381.4968408110.

The spelling of 55522989 in words is "fifty-five million, five hundred twenty-two thousand, nine hundred eighty-nine".