157289223 has 16 divisors (see below), whose sum is σ = 258116096. Its totient is φ = 82965600.

The previous prime is 157289207. The next prime is 157289261. The reversal of 157289223 is 322982751.

It is not a de Polignac number, because 157289223 - 2⁴ = 157289207 is a prime.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is the 12542-nd Hogben number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157289263) by changing a digit.

It is a nontrivial repunit in base 12541.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 287803 + ... + 288348.

It is an arithmetic number, because the mean of its divisors is an integer number (16132256).

Almost surely, 2^157289223 is an apocalyptic number.

157289223 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

157289223 is a deficient number, since it is larger than the sum of its proper divisors (100826873).

157289223 is a wasteful number, since it uses less digits than its factorization.

157289223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 576174.

The product of its digits is 60480, while the sum is 39.

The square root of 157289223 is about 12541.5000299007. The cubic root of 157289223 is about 539.8001352259.

The spelling of 157289223 in words is "one hundred fifty-seven million, two hundred eighty-nine thousand, two hundred twenty-three".