956531 has 4 divisors (see below), whose sum is σ = 960432. Its totient is φ = 952632.

The previous prime is 956521. The next prime is 956569. The reversal of 956531 is 135659.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 135659 = 293 ⋅463.

It is a cyclic number.

It is not a de Polignac number, because 956531 - 2¹⁸ = 694387 is a prime.

It is a super-2 number, since 2×956531² = 1829903107922, which contains 22 as substring.

It is a Duffinian number.

It is a nialpdrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 956494 and 956503.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 956531.

It is not an unprimeable number, because it can be changed into a prime (956521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1556 + ... + 2081.

It is an arithmetic number, because the mean of its divisors is an integer number (240108).

2⁹⁵⁶⁵³¹ is an apocalyptic number.

956531 is a deficient number, since it is larger than the sum of its proper divisors (3901).

956531 is a wasteful number, since it uses less digits than its factorization.

956531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3900.

The product of its digits is 4050, while the sum is 29.

The square root of 956531 is about 978.0240283347. The cubic root of 956531 is about 98.5295160928.

The spelling of 956531 in words is "nine hundred fifty-six thousand, five hundred thirty-one".