222447157 has 4 divisors (see below), whose sum is σ = 222509196. Its totient is φ = 222385120.

The previous prime is 222447119. The next prime is 222447163. The reversal of 222447157 is 751744222.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 751744222 = 2 ⋅375872111.

It can be written as a sum of positive squares in 2 ways, for example, as 174477681 + 47969476 = 13209^2 + 6926^2 .

It is a cyclic number.

It is not a de Polignac number, because 222447157 - 2²⁷ = 88229429 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 (222447107) 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, 25288 + ... + 32929.

It is an arithmetic number, because the mean of its divisors is an integer number (55627299).

Almost surely, 2^222447157 is an apocalyptic number.

It is an amenable number.

222447157 is a deficient number, since it is larger than the sum of its proper divisors (62039).

222447157 is an equidigital number, since it uses as much as digits as its factorization.

222447157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62038.

The product of its digits is 31360, while the sum is 34.

The square root of 222447157 is about 14914.6624836099. The cubic root of 222447157 is about 605.9111621707.

The spelling of 222447157 in words is "two hundred twenty-two million, four hundred forty-seven thousand, one hundred fifty-seven".