523157 has 4 divisors (see below), whose sum is σ = 534336. Its totient is φ = 511980.

The previous prime is 523129. The next prime is 523169. The reversal of 523157 is 751325.

523157 is an esthetic number in base 9, because in such base its adjacent digits differ by 1.

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 not a de Polignac number, because 523157 - 2⁶ = 523093 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 (523177) 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, 5519 + ... + 5612.

It is an arithmetic number, because the mean of its divisors is an integer number (133584).

2⁵²³¹⁵⁷ is an apocalyptic number.

It is an amenable number.

523157 is a deficient number, since it is larger than the sum of its proper divisors (11179).

523157 is a wasteful number, since it uses less digits than its factorization.

523157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11178.

The product of its digits is 1050, while the sum is 23.

The square root of 523157 is about 723.2959283723. The cubic root of 523157 is about 80.5769232434.

The spelling of 523157 in words is "five hundred twenty-three thousand, one hundred fifty-seven".