961533056 has 128 divisors (see below), whose sum is σ = 2236248000. Its totient is φ = 408391680.

The previous prime is 961533037. The next prime is 961533071. The reversal of 961533056 is 650335169.

It is a tau number, because it is divible by the number of its divisors (128).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6917435 + ... + 6917573.

Almost surely, 2^961533056 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 961533056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1118124000).

961533056 is an abundant number, since it is smaller than the sum of its proper divisors (1274714944).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

961533056 is a wasteful number, since it uses less digits than its factorization.

961533056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215 (or 169 counting only the distinct ones).

The product of its (nonzero) digits is 72900, while the sum is 38.

The square root of 961533056 is about 31008.5964854909. The cubic root of 961533056 is about 987.0096672902.

The spelling of 961533056 in words is "nine hundred sixty-one million, five hundred thirty-three thousand, fifty-six".