226257191 has 8 divisors (see below), whose sum is σ = 232873344. Its totient is φ = 219736440.

The previous prime is 226257169. The next prime is 226257209. The reversal of 226257191 is 191752622.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-226257191 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (226257121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19025 + ... + 28538.

It is an arithmetic number, because the mean of its divisors is an integer number (29109168).

Almost surely, 2^226257191 is an apocalyptic number.

226257191 is a deficient number, since it is larger than the sum of its proper divisors (6616153).

226257191 is an equidigital number, since it uses as much as digits as its factorization.

226257191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47701.

The product of its digits is 15120, while the sum is 35.

The square root of 226257191 is about 15041.8479915202. The cubic root of 226257191 is about 609.3509094873.

The spelling of 226257191 in words is "two hundred twenty-six million, two hundred fifty-seven thousand, one hundred ninety-one".