222047549 has 2 divisors, whose sum is σ = 222047550. Its totient is φ = 222047548.

The previous prime is 222047533. The next prime is 222047561. The reversal of 222047549 is 945740222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 170824900 + 51222649 = 13070^2 + 7157^2 .

It is a cyclic number.

It is not a de Polignac number, because 222047549 - 2⁴ = 222047533 is a prime.

It is a super-2 number, since 2×222047549² = 98610228033814802, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (222047569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111023774 + 111023775.

It is an arithmetic number, because the mean of its divisors is an integer number (111023775).

Almost surely, 2^222047549 is an apocalyptic number.

It is an amenable number.

222047549 is a deficient number, since it is larger than the sum of its proper divisors (1).

222047549 is an equidigital number, since it uses as much as digits as its factorization.

222047549 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40320, while the sum is 35.

The square root of 222047549 is about 14901.2599802835. The cubic root of 222047549 is about 605.5481215234.

The spelling of 222047549 in words is "two hundred twenty-two million, forty-seven thousand, five hundred forty-nine".