220354261 has 2 divisors, whose sum is σ = 220354262. Its totient is φ = 220354260.

The previous prime is 220354247. The next prime is 220354301. The reversal of 220354261 is 162453022.

220354261 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 134699236 + 85655025 = 11606^2 + 9255^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-220354261 is a prime.

It is a super-2 number, since 2×220354261² = 97112000681712242, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220354061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110177130 + 110177131.

It is an arithmetic number, because the mean of its divisors is an integer number (110177131).

Almost surely, 2^220354261 is an apocalyptic number.

It is an amenable number.

220354261 is a deficient number, since it is larger than the sum of its proper divisors (1).

220354261 is an equidigital number, since it uses as much as digits as its factorization.

220354261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 220354261 is about 14844.3343063945. The cubic root of 220354261 is about 604.0049312128.

The spelling of 220354261 in words is "two hundred twenty million, three hundred fifty-four thousand, two hundred sixty-one".