961107521 has 8 divisors (see below), whose sum is σ = 1065669888. Its totient is φ = 859410000.

The previous prime is 961107493. The next prime is 961107541. The reversal of 961107521 is 125701169.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-961107521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (961107541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 715505 + ... + 716846.

It is an arithmetic number, because the mean of its divisors is an integer number (133208736).

Almost surely, 2^961107521 is an apocalyptic number.

It is an amenable number.

961107521 is a deficient number, since it is larger than the sum of its proper divisors (104562367).

961107521 is a wasteful number, since it uses less digits than its factorization.

961107521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1432423.

The product of its (nonzero) digits is 3780, while the sum is 32.

The square root of 961107521 is about 31001.7341611723. The cubic root of 961107521 is about 986.8640425053.

The spelling of 961107521 in words is "nine hundred sixty-one million, one hundred seven thousand, five hundred twenty-one".