55158633 has 6 divisors (see below), whose sum is σ = 79673594. Its totient is φ = 36772416.

The previous prime is 55158619. The next prime is 55158643. The reversal of 55158633 is 33685155.

55158633 is a `hidden beast` number, since 5 + 5 + 15 + 8 + 633 = 666.

It can be written as a sum of positive squares in only one way, i.e., 37417689 + 17740944 = 6117^2 + 4212^2 .

It is not a de Polignac number, because 55158633 - 2⁴ = 55158617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55158613) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3064360 + ... + 3064377.

Almost surely, 2^55158633 is an apocalyptic number.

It is an amenable number.

55158633 is a deficient number, since it is larger than the sum of its proper divisors (24514961).

55158633 is a wasteful number, since it uses less digits than its factorization.

55158633 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6128743 (or 6128740 counting only the distinct ones).

The product of its digits is 54000, while the sum is 36.

The square root of 55158633 is about 7426.8858211231. The cubic root of 55158633 is about 380.6605155856.

The spelling of 55158633 in words is "fifty-five million, one hundred fifty-eight thousand, six hundred thirty-three".