224161901 has 2 divisors, whose sum is σ = 224161902. Its totient is φ = 224161900.

The previous prime is 224161877. The next prime is 224161919. The reversal of 224161901 is 109161422.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 208369225 + 15792676 = 14435^2 + 3974^2 .

It is a cyclic number.

It is not a de Polignac number, because 224161901 - 2¹⁸ = 223899757 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (224161921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112080950 + 112080951.

It is an arithmetic number, because the mean of its divisors is an integer number (112080951).

Almost surely, 2^224161901 is an apocalyptic number.

It is an amenable number.

224161901 is a deficient number, since it is larger than the sum of its proper divisors (1).

224161901 is an equidigital number, since it uses as much as digits as its factorization.

224161901 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 224161901 is about 14972.0373029191. The cubic root of 224161901 is about 607.4640766352.

The spelling of 224161901 in words is "two hundred twenty-four million, one hundred sixty-one thousand, nine hundred one".