956521 has 2 divisors, whose sum is σ = 956522. Its totient is φ = 956520.

The previous prime is 956513. The next prime is 956569. The reversal of 956521 is 125659.

956521 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 929296 + 27225 = 964^2 + 165^2 .

It is an emirp because it is prime and its reverse (125659) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 956521 - 2³ = 956513 is a prime.

It is a Chen prime.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 956521.

It is not a weakly prime, because it can be changed into another prime (953521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 478260 + 478261.

It is an arithmetic number, because the mean of its divisors is an integer number (478261).

2⁹⁵⁶⁵²¹ is an apocalyptic number.

It is an amenable number.

956521 is a deficient number, since it is larger than the sum of its proper divisors (1).

956521 is an equidigital number, since it uses as much as digits as its factorization.

956521 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2700, while the sum is 28.

The square root of 956521 is about 978.0189159725. The cubic root of 956521 is about 98.5291727345.

The spelling of 956521 in words is "nine hundred fifty-six thousand, five hundred twenty-one".