223958257 has 2 divisors, whose sum is σ = 223958258. Its totient is φ = 223958256.

The previous prime is 223958249. The next prime is 223958261. The reversal of 223958257 is 752859322.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 223831521 + 126736 = 14961^2 + 356^2 .

It is a cyclic number.

It is not a de Polignac number, because 223958257 - 2³ = 223958249 is a prime.

It is not a weakly prime, because it can be changed into another prime (223958227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111979128 + 111979129.

It is an arithmetic number, because the mean of its divisors is an integer number (111979129).

Almost surely, 2^223958257 is an apocalyptic number.

It is an amenable number.

223958257 is a deficient number, since it is larger than the sum of its proper divisors (1).

223958257 is an equidigital number, since it uses as much as digits as its factorization.

223958257 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 302400, while the sum is 43.

The square root of 223958257 is about 14965.2349463682. The cubic root of 223958257 is about 607.2800669323.

The spelling of 223958257 in words is "two hundred twenty-three million, nine hundred fifty-eight thousand, two hundred fifty-seven".