220555157 has 4 divisors (see below), whose sum is σ = 224293440. Its totient is φ = 216816876.

The previous prime is 220555151. The next prime is 220555177. The reversal of 220555157 is 751555022.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 220555157 - 2¹⁸ = 220293013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220555151) 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, 1869053 + ... + 1869170.

It is an arithmetic number, because the mean of its divisors is an integer number (56073360).

Almost surely, 2^220555157 is an apocalyptic number.

It is an amenable number.

220555157 is a deficient number, since it is larger than the sum of its proper divisors (3738283).

220555157 is an equidigital number, since it uses as much as digits as its factorization.

220555157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3738282.

The product of its (nonzero) digits is 17500, while the sum is 32.

The square root of 220555157 is about 14851.0995215843. The cubic root of 220555157 is about 604.1884316619.

The spelling of 220555157 in words is "two hundred twenty million, five hundred fifty-five thousand, one hundred fifty-seven".