55144090 has 24 divisors (see below), whose sum is σ = 105447132. Its totient is φ = 20759040.

The previous prime is 55144069. The next prime is 55144123. The reversal of 55144090 is 9044155.

It can be written as a sum of positive squares in 6 ways, for example, as 29953729 + 25190361 = 5473^2 + 5019^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6651 + ... + 12430.

Almost surely, 2^55144090 is an apocalyptic number.

55144090 is a deficient number, since it is larger than the sum of its proper divisors (50303042).

55144090 is a wasteful number, since it uses less digits than its factorization.

55144090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19122 (or 19105 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 55144090 is about 7425.9066786487. The cubic root of 55144090 is about 380.6270579491.

It can be divided in two parts, 5514 and 4090, that added together give a square (9604 = 98²).

The spelling of 55144090 in words is "fifty-five million, one hundred forty-four thousand, ninety".