531157 has 8 divisors (see below), whose sum is σ = 586080. Its totient is φ = 477360.

The previous prime is 531143. The next prime is 531163. The reversal of 531157 is 751135.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 531157 - 2¹⁹ = 6869 is a prime.

It is a nialpdrome in base 9.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (531197) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 978 + ... + 1420.

It is an arithmetic number, because the mean of its divisors is an integer number (73260).

2⁵³¹¹⁵⁷ is an apocalyptic number.

It is an amenable number.

531157 is a deficient number, since it is larger than the sum of its proper divisors (54923).

531157 is a wasteful number, since it uses less digits than its factorization.

531157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 563.

The product of its digits is 525, while the sum is 22.

The square root of 531157 is about 728.8051865897. The cubic root of 531157 is about 80.9855687342.

Subtracting from 531157 its sum of digits (22), we obtain a palindrome (531135).

The spelling of 531157 in words is "five hundred thirty-one thousand, one hundred fifty-seven".