224157091 has 4 divisors (see below), whose sum is σ = 226675800. Its totient is φ = 221638384.

The previous prime is 224157067. The next prime is 224157133. The reversal of 224157091 is 190751422.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 224157091 - 2¹⁹ = 223632803 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (224157191) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1259221 + ... + 1259398.

It is an arithmetic number, because the mean of its divisors is an integer number (56668950).

Almost surely, 2^224157091 is an apocalyptic number.

224157091 is a deficient number, since it is larger than the sum of its proper divisors (2518709).

224157091 is an equidigital number, since it uses as much as digits as its factorization.

224157091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2518708.

The product of its (nonzero) digits is 5040, while the sum is 31.

The square root of 224157091 is about 14971.8766692756. The cubic root of 224157091 is about 607.4597316758.

The spelling of 224157091 in words is "two hundred twenty-four million, one hundred fifty-seven thousand, ninety-one".