55628806 has 8 divisors (see below), whose sum is σ = 83597400. Its totient is φ = 27763008.

The previous prime is 55628801. The next prime is 55628819. The reversal of 55628806 is 60882655.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55628801) 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, 24331 + ... + 26518.

It is an arithmetic number, because the mean of its divisors is an integer number (10449675).

Almost surely, 2^55628806 is an apocalyptic number.

55628806 is a deficient number, since it is larger than the sum of its proper divisors (27968594).

55628806 is a wasteful number, since it uses less digits than its factorization.

55628806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51398.

The product of its (nonzero) digits is 115200, while the sum is 40.

The square root of 55628806 is about 7458.4720955434. The cubic root of 55628806 is about 381.7390421871.

The spelling of 55628806 in words is "fifty-five million, six hundred twenty-eight thousand, eight hundred six".