961529551 has 16 divisors (see below), whose sum is σ = 991116000. Its totient is φ = 932450688.

The previous prime is 961529497. The next prime is 961529557. The reversal of 961529551 is 155925169.

It is a cyclic number.

It is not a de Polignac number, because 961529551 - 2⁹ = 961529039 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 961529498 and 961529507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (961529557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2754925 + ... + 2755273.

It is an arithmetic number, because the mean of its divisors is an integer number (61944750).

Almost surely, 2^961529551 is an apocalyptic number.

961529551 is a deficient number, since it is larger than the sum of its proper divisors (29586449).

961529551 is a wasteful number, since it uses less digits than its factorization.

961529551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 858.

The product of its digits is 121500, while the sum is 43.

The square root of 961529551 is about 31008.5399688537. The cubic root of 961529551 is about 987.0084679995.

The spelling of 961529551 in words is "nine hundred sixty-one million, five hundred twenty-nine thousand, five hundred fifty-one".