56961611 has 24 divisors (see below), whose sum is σ = 71115936. Its totient is φ = 44651520.

The previous prime is 56961581. The next prime is 56961613. The reversal of 56961611 is 11616965.

56961611 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 56961611 - 2¹⁰ = 56960587 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 (56961613) 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, 74471 + ... + 75231.

It is an arithmetic number, because the mean of its divisors is an integer number (2963164).

Almost surely, 2^56961611 is an apocalyptic number.

56961611 is a deficient number, since it is larger than the sum of its proper divisors (14154325).

56961611 is a wasteful number, since it uses less digits than its factorization.

56961611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 839 (or 822 counting only the distinct ones).

The product of its digits is 9720, while the sum is 35.

The square root of 56961611 is about 7547.2916334272. The cubic root of 56961611 is about 384.7636959993.

The spelling of 56961611 in words is "fifty-six million, nine hundred sixty-one thousand, six hundred eleven".