1117157 has 4 divisors (see below), whose sum is σ = 1121580. Its totient is φ = 1112736.

The previous prime is 1117153. The next prime is 1117169. The reversal of 1117157 is 7517111.

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

It can be written as a sum of positive squares in 2 ways, for example, as 37636 + 1079521 = 194^2 + 1039^2 .

It is a cyclic number.

It is not a de Polignac number, because 1117157 - 2² = 1117153 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 (1117153) 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, 1808 + ... + 2345.

It is an arithmetic number, because the mean of its divisors is an integer number (280395).

2^1117157 is an apocalyptic number.

It is an amenable number.

1117157 is a deficient number, since it is larger than the sum of its proper divisors (4423).

1117157 is an equidigital number, since it uses as much as digits as its factorization.

1117157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4422.

The product of its digits is 245, while the sum is 23.

The square root of 1117157 is about 1056.9564797095. The cubic root of 1117157 is about 103.7619369824.

The spelling of 1117157 in words is "one million, one hundred seventeen thousand, one hundred fifty-seven".