223157 has 4 divisors (see below), whose sum is σ = 243456. Its totient is φ = 202860.

The previous prime is 223151. The next prime is 223207. The reversal of 223157 is 751322.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-223157 is a prime.

It is a super-3 number, since 3×223157³ = 33339017559152679, which contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223151) 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, 10133 + ... + 10154.

It is an arithmetic number, because the mean of its divisors is an integer number (60864).

2²²³¹⁵⁷ is an apocalyptic number.

It is an amenable number.

223157 is a deficient number, since it is larger than the sum of its proper divisors (20299).

223157 is a wasteful number, since it uses less digits than its factorization.

223157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20298.

The product of its digits is 420, while the sum is 20.

The square root of 223157 is about 472.3949618698. The cubic root of 223157 is about 60.6554978165.

Adding to 223157 its reverse (751322), we get a palindrome (974479).

It can be divided in two parts, 22315 and 7, that added together give a palindrome (22322).

The spelling of 223157 in words is "two hundred twenty-three thousand, one hundred fifty-seven".