55688590 has 8 divisors (see below), whose sum is σ = 100239480. Its totient is φ = 22275432.

The previous prime is 55688587. The next prime is 55688609. The reversal of 55688590 is 9588655.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 55688590.

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, 2784420 + ... + 2784439.

It is an arithmetic number, because the mean of its divisors is an integer number (12529935).

Almost surely, 2^55688590 is an apocalyptic number.

55688590 is a deficient number, since it is larger than the sum of its proper divisors (44550890).

55688590 is a wasteful number, since it uses less digits than its factorization.

55688590 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5568866.

The product of its (nonzero) digits is 432000, while the sum is 46.

The square root of 55688590 is about 7462.4788106902. The cubic root of 55688590 is about 381.8757442419.

The spelling of 55688590 in words is "fifty-five million, six hundred eighty-eight thousand, five hundred ninety".