157223 has 4 divisors (see below), whose sum is σ = 171528. Its totient is φ = 142920.

The previous prime is 157219. The next prime is 157229. The reversal of 157223 is 322751.

157223 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 157223 - 2² = 157219 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 157195 and 157204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157229) 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, 7136 + ... + 7157.

It is an arithmetic number, because the mean of its divisors is an integer number (42882).

2¹⁵⁷²²³ is an apocalyptic number.

157223 is a deficient number, since it is larger than the sum of its proper divisors (14305).

157223 is a wasteful number, since it uses less digits than its factorization.

157223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14304.

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

The square root of 157223 is about 396.5135558843. The cubic root of 157223 is about 53.9724367792.

Adding to 157223 its reverse (322751), we get a palindrome (479974).

It can be divided in two parts, 15 and 7223, that multiplied together give a triangular number (108345 = T₄₆₅).

The spelling of 157223 in words is "one hundred fifty-seven thousand, two hundred twenty-three".