222658481 has 2 divisors, whose sum is σ = 222658482. Its totient is φ = 222658480.

The previous prime is 222658463. The next prime is 222658493. The reversal of 222658481 is 184856222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 175324081 + 47334400 = 13241^2 + 6880^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-222658481 is a prime.

It is a super-2 number, since 2×222658481² = 99153598322454722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (222658451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111329240 + 111329241.

It is an arithmetic number, because the mean of its divisors is an integer number (111329241).

Almost surely, 2^222658481 is an apocalyptic number.

It is an amenable number.

222658481 is a deficient number, since it is larger than the sum of its proper divisors (1).

222658481 is an equidigital number, since it uses as much as digits as its factorization.

222658481 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 61440, while the sum is 38.

The square root of 222658481 is about 14921.7452397499. The cubic root of 222658481 is about 606.1029725862.

The spelling of 222658481 in words is "two hundred twenty-two million, six hundred fifty-eight thousand, four hundred eighty-one".