961357572 has 144 divisors (see below), whose sum is σ = 2897381760. Its totient is φ = 273030912.

The previous prime is 961357559. The next prime is 961357589. The reversal of 961357572 is 275753169.

961357572 is a `hidden beast` number, since 9 + 6 + 1 + 3 + 575 + 72 = 666.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 1557808 + ... + 1558424.

Almost surely, 2^961357572 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 961357572, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1448690880).

961357572 is an abundant number, since it is smaller than the sum of its proper divisors (1936024188).

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

961357572 is a wasteful number, since it uses less digits than its factorization.

961357572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 872 (or 858 counting only the distinct ones).

The product of its digits is 396900, while the sum is 45.

The square root of 961357572 is about 31005.7667539443. The cubic root of 961357572 is about 986.9496191059.

The spelling of 961357572 in words is "nine hundred sixty-one million, three hundred fifty-seven thousand, five hundred seventy-two".