961875521 has 24 divisors (see below), whose sum is σ = 1046845440. Its totient is φ = 883395072.

The previous prime is 961875503. The next prime is 961875581. The reversal of 961875521 is 125578169.

It is not a de Polignac number, because 961875521 - 2¹⁰ = 961874497 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (961875581) 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 23 ways as a sum of consecutive naturals, for example, 2679140 + ... + 2679498.

It is an arithmetic number, because the mean of its divisors is an integer number (43618560).

Almost surely, 2^961875521 is an apocalyptic number.

It is an amenable number.

961875521 is a deficient number, since it is larger than the sum of its proper divisors (84969919).

961875521 is a wasteful number, since it uses less digits than its factorization.

961875521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 593 (or 576 counting only the distinct ones).

The product of its digits is 151200, while the sum is 44.

The square root of 961875521 is about 31014.1180916047. The cubic root of 961875521 is about 987.1268330120.

The spelling of 961875521 in words is "nine hundred sixty-one million, eight hundred seventy-five thousand, five hundred twenty-one".