224202991 has 2 divisors, whose sum is σ = 224202992. Its totient is φ = 224202990.

The previous prime is 224202959. The next prime is 224203043. The reversal of 224202991 is 199202422.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 224202991 - 2⁵ = 224202959 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (224202941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112101495 + 112101496.

It is an arithmetic number, because the mean of its divisors is an integer number (112101496).

Almost surely, 2^224202991 is an apocalyptic number.

224202991 is a deficient number, since it is larger than the sum of its proper divisors (1).

224202991 is an equidigital number, since it uses as much as digits as its factorization.

224202991 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 224202991 is about 14973.4094647812. The cubic root of 224202991 is about 607.5011914375.

The spelling of 224202991 in words is "two hundred twenty-four million, two hundred two thousand, nine hundred ninety-one".