220460557 has 2 divisors, whose sum is σ = 220460558. Its totient is φ = 220460556.

The previous prime is 220460519. The next prime is 220460563. The reversal of 220460557 is 755064022.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 211586116 + 8874441 = 14546^2 + 2979^2 .

It is a cyclic number.

It is not a de Polignac number, because 220460557 - 2²³ = 212071949 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220460257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110230278 + 110230279.

It is an arithmetic number, because the mean of its divisors is an integer number (110230279).

Almost surely, 2^220460557 is an apocalyptic number.

It is an amenable number.

220460557 is a deficient number, since it is larger than the sum of its proper divisors (1).

220460557 is an equidigital number, since it uses as much as digits as its factorization.

220460557 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16800, while the sum is 31.

The square root of 220460557 is about 14847.9142306251. The cubic root of 220460557 is about 604.1020369476.

The spelling of 220460557 in words is "two hundred twenty million, four hundred sixty thousand, five hundred fifty-seven".