956651557 has 12 divisors (see below), whose sum is σ = 1017367300. Its totient is φ = 899375616.

The previous prime is 956651543. The next prime is 956651561. The reversal of 956651557 is 755156659.

It can be written as a sum of positive squares in 6 ways, for example, as 4990756 + 951660801 = 2234^2 + 30849^2 .

It is not a de Polignac number, because 956651557 - 2²³ = 948262949 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 956651557.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (956651567) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 446593 + ... + 448729.

Almost surely, 2^956651557 is an apocalyptic number.

It is an amenable number.

956651557 is a deficient number, since it is larger than the sum of its proper divisors (60715743).

956651557 is a wasteful number, since it uses less digits than its factorization.

956651557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3720 (or 3703 counting only the distinct ones).

The product of its digits is 1417500, while the sum is 49.

The square root of 956651557 is about 30929.7843025133. The cubic root of 956651557 is about 985.3365532925.

The spelling of 956651557 in words is "nine hundred fifty-six million, six hundred fifty-one thousand, five hundred fifty-seven".