223958261 has 2 divisors, whose sum is σ = 223958262. Its totient is φ = 223958260.

The previous prime is 223958257. The next prime is 223958297. The reversal of 223958261 is 162859322.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 202521361 + 21436900 = 14231^2 + 4630^2 .

It is a cyclic number.

It is not a de Polignac number, because 223958261 - 2² = 223958257 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (223951261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111979130 + 111979131.

It is an arithmetic number, because the mean of its divisors is an integer number (111979131).

Almost surely, 2^223958261 is an apocalyptic number.

It is an amenable number.

223958261 is a deficient number, since it is larger than the sum of its proper divisors (1).

223958261 is an equidigital number, since it uses as much as digits as its factorization.

223958261 is an evil number, because the sum of its binary digits is even.

The product of its digits is 51840, while the sum is 38.

The square root of 223958261 is about 14965.2350800113. The cubic root of 223958261 is about 607.2800705477.

The spelling of 223958261 in words is "two hundred twenty-three million, nine hundred fifty-eight thousand, two hundred sixty-one".