55133589 has 16 divisors (see below), whose sum is σ = 86284928. Its totient is φ = 30652992.

The previous prime is 55133587. The next prime is 55133597. The reversal of 55133589 is 98533155.

It is a happy number.

It is not a de Polignac number, because 55133589 - 2¹ = 55133587 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 (55133587) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34702 + ... + 36255.

It is an arithmetic number, because the mean of its divisors is an integer number (5392808).

Almost surely, 2^55133589 is an apocalyptic number.

It is an amenable number.

55133589 is a deficient number, since it is larger than the sum of its proper divisors (31151339).

55133589 is a wasteful number, since it uses less digits than its factorization.

55133589 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71004.

The product of its digits is 81000, while the sum is 39.

The square root of 55133589 is about 7425.1995932769. The cubic root of 55133589 is about 380.6028956833.

The spelling of 55133589 in words is "fifty-five million, one hundred thirty-three thousand, five hundred eighty-nine".