55586240 has 28 divisors (see below), whose sum is σ = 132365496. Its totient is φ = 22234368.

The previous prime is 55586233. The next prime is 55586257. The reversal of 55586240 is 4268555.

It is a self number, because there is not a number n which added to its sum of digits gives 55586240.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 86534 + ... + 87173.

Almost surely, 2^55586240 is an apocalyptic number.

It is an amenable number.

55586240 is an abundant number, since it is smaller than the sum of its proper divisors (76779256).

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

55586240 is a wasteful number, since it uses less digits than its factorization.

55586240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173724 (or 173714 counting only the distinct ones).

The product of its (nonzero) digits is 48000, while the sum is 35.

The square root of 55586240 is about 7455.6180159662. The cubic root of 55586240 is about 381.6416510961.

The spelling of 55586240 in words is "fifty-five million, five hundred eighty-six thousand, two hundred forty".