224558981 has 2 divisors, whose sum is σ = 224558982. Its totient is φ = 224558980.

The previous prime is 224558953. The next prime is 224558989. The reversal of 224558981 is 189855422.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 166281025 + 58277956 = 12895^2 + 7634^2 .

It is a cyclic number.

It is not a de Polignac number, because 224558981 - 2¹⁴ = 224542597 is a prime.

It is a super-2 number, since 2×224558981² = 100853471895516722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (224558989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112279490 + 112279491.

It is an arithmetic number, because the mean of its divisors is an integer number (112279491).

Almost surely, 2^224558981 is an apocalyptic number.

It is an amenable number.

224558981 is a deficient number, since it is larger than the sum of its proper divisors (1).

224558981 is an equidigital number, since it uses as much as digits as its factorization.

224558981 is an evil number, because the sum of its binary digits is even.

The product of its digits is 230400, while the sum is 44.

The square root of 224558981 is about 14985.2921559775. The cubic root of 224558981 is about 607.8225519858.

The spelling of 224558981 in words is "two hundred twenty-four million, five hundred fifty-eight thousand, nine hundred eighty-one".