220491157 has 2 divisors, whose sum is σ = 220491158. Its totient is φ = 220491156.

The previous prime is 220491151. The next prime is 220491163. The reversal of 220491157 is 751194022.

220491157 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a balanced prime because it is at equal distance from previous prime (220491151) and next prime (220491163).

It can be written as a sum of positive squares in only one way, i.e., 213568996 + 6922161 = 14614^2 + 2631^2 .

It is a cyclic number.

It is not a de Polignac number, because 220491157 - 2¹⁵ = 220458389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220491151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110245578 + 110245579.

It is an arithmetic number, because the mean of its divisors is an integer number (110245579).

Almost surely, 2^220491157 is an apocalyptic number.

It is an amenable number.

220491157 is a deficient number, since it is larger than the sum of its proper divisors (1).

220491157 is an equidigital number, since it uses as much as digits as its factorization.

220491157 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5040, while the sum is 31.

The square root of 220491157 is about 14848.9446426337. The cubic root of 220491157 is about 604.1299855103.

The spelling of 220491157 in words is "two hundred twenty million, four hundred ninety-one thousand, one hundred fifty-seven".