55115136 has 48 divisors (see below), whose sum is σ = 158602860. Its totient is φ = 18371328.

The previous prime is 55115131. The next prime is 55115149. The reversal of 55115136 is 63151155.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55115131) 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, 22770 + ... + 25073.

Almost surely, 2^55115136 is an apocalyptic number.

It is an amenable number.

55115136 is an abundant number, since it is smaller than the sum of its proper divisors (103487724).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55115136 is a wasteful number, since it uses less digits than its factorization.

55115136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47863 (or 47848 counting only the distinct ones).

The product of its digits is 2250, while the sum is 27.

The square root of 55115136 is about 7423.9568964266. The cubic root of 55115136 is about 380.5604288371.

The spelling of 55115136 in words is "fifty-five million, one hundred fifteen thousand, one hundred thirty-six".