55086040 has 16 divisors (see below), whose sum is σ = 123943680. Its totient is φ = 22034400.

The previous prime is 55086023. The next prime is 55086049. The reversal of 55086040 is 4068055.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55086049) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 688536 + ... + 688615.

It is an arithmetic number, because the mean of its divisors is an integer number (7746480).

Almost surely, 2^55086040 is an apocalyptic number.

It is an amenable number.

55086040 is an abundant number, since it is smaller than the sum of its proper divisors (68857640).

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

55086040 is a wasteful number, since it uses less digits than its factorization.

55086040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1377162 (or 1377158 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 28.

The square root of 55086040 is about 7421.9970358388. The cubic root of 55086040 is about 380.4934494427.

The spelling of 55086040 in words is "fifty-five million, eighty-six thousand, forty".