55856290 has 16 divisors (see below), whose sum is σ = 114904512. Its totient is φ = 19150704.

The previous prime is 55856267. The next prime is 55856293. The reversal of 55856290 is 9265855.

It is not an unprimeable number, because it can be changed into a prime (55856293) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 398904 + ... + 399043.

It is an arithmetic number, because the mean of its divisors is an integer number (7181532).

Almost surely, 2^55856290 is an apocalyptic number.

55856290 is an abundant number, since it is smaller than the sum of its proper divisors (59048222).

55856290 is a wasteful number, since it uses less digits than its factorization.

55856290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 797961.

The product of its (nonzero) digits is 108000, while the sum is 40.

The square root of 55856290 is about 7473.7065770607. The cubic root of 55856290 is about 382.2586855587.

The spelling of 55856290 in words is "fifty-five million, eight hundred fifty-six thousand, two hundred ninety".