55863290 has 32 divisors (see below), whose sum is σ = 115530624. Its totient is φ = 19051200.

The previous prime is 55863289. The next prime is 55863293. The reversal of 55863290 is 9236855.

It is not an unprimeable number, because it can be changed into a prime (55863293) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11765 + ... + 15815.

It is an arithmetic number, because the mean of its divisors is an integer number (3610332).

Almost surely, 2^55863290 is an apocalyptic number.

55863290 is an abundant number, since it is smaller than the sum of its proper divisors (59667334).

55863290 is a wasteful number, since it uses less digits than its factorization.

55863290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4262.

The product of its (nonzero) digits is 64800, while the sum is 38.

The square root of 55863290 is about 7474.1748708469. The cubic root of 55863290 is about 382.2746533159.

The spelling of 55863290 in words is "fifty-five million, eight hundred sixty-three thousand, two hundred ninety".