220813550 has 24 divisors (see below), whose sum is σ = 416504592. Its totient is φ = 87080000.

The previous prime is 220813543. The next prime is 220813591. The reversal of 220813550 is 55318022.

It is a hoax number, since the sum of its digits (26) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27551 + ... + 34650.

It is an arithmetic number, because the mean of its divisors is an integer number (17354358).

Almost surely, 2^220813550 is an apocalyptic number.

220813550 is a deficient number, since it is larger than the sum of its proper divisors (195691042).

220813550 is a wasteful number, since it uses less digits than its factorization.

220813550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62284 (or 62279 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 26.

The square root of 220813550 is about 14859.7964319839. The cubic root of 220813550 is about 604.4242866987.

The spelling of 220813550 in words is "two hundred twenty million, eight hundred thirteen thousand, five hundred fifty".