961053821 has 12 divisors (see below), whose sum is σ = 1189336032. Its totient is φ = 760393296.

The previous prime is 961053733. The next prime is 961053851. The reversal of 961053821 is 128350169.

It is not a de Polignac number, because 961053821 - 2¹⁰ = 961052797 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (961053851) 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, 405011 + ... + 407376.

It is an arithmetic number, because the mean of its divisors is an integer number (99111336).

Almost surely, 2^961053821 is an apocalyptic number.

961053821 is a gapful number since it is divisible by the number (91) formed by its first and last digit.

It is an amenable number.

961053821 is a deficient number, since it is larger than the sum of its proper divisors (228282211).

961053821 is a wasteful number, since it uses less digits than its factorization.

961053821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 812420 (or 812407 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 35.

The square root of 961053821 is about 31000.8680684912. The cubic root of 961053821 is about 986.8456624646.

The spelling of 961053821 in words is "nine hundred sixty-one million, fifty-three thousand, eight hundred twenty-one".