55615149 has 6 divisors (see below), whose sum is σ = 80333006. Its totient is φ = 37076760.

The previous prime is 55615141. The next prime is 55615163. The reversal of 55615149 is 94151655.

55615149 is a `hidden beast` number, since 5 + 561 + 51 + 49 = 666.

It can be written as a sum of positive squares in only one way, i.e., 52099524 + 3515625 = 7218^2 + 1875^2 .

It is not a de Polignac number, because 55615149 - 2³ = 55615141 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 (55615141) 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, 3089722 + ... + 3089739.

Almost surely, 2^55615149 is an apocalyptic number.

It is an amenable number.

55615149 is a deficient number, since it is larger than the sum of its proper divisors (24717857).

55615149 is a wasteful number, since it uses less digits than its factorization.

55615149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6179467 (or 6179464 counting only the distinct ones).

The product of its digits is 27000, while the sum is 36.

The square root of 55615149 is about 7457.5565033059. The cubic root of 55615149 is about 381.7078003590.

The spelling of 55615149 in words is "fifty-five million, six hundred fifteen thousand, one hundred forty-nine".