65561156 has 12 divisors (see below), whose sum is σ = 118433280. Its totient is φ = 31723080.

The previous prime is 65561143. The next prime is 65561189. The reversal of 65561156 is 65116556.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 264236 + ... + 264483.

It is an arithmetic number, because the mean of its divisors is an integer number (9869440).

Almost surely, 2^65561156 is an apocalyptic number.

It is an amenable number.

65561156 is a deficient number, since it is larger than the sum of its proper divisors (52872124).

65561156 is a wasteful number, since it uses less digits than its factorization.

65561156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 528754 (or 528752 counting only the distinct ones).

The product of its digits is 27000, while the sum is 35.

The square root of 65561156 is about 8096.9843769147. The cubic root of 65561156 is about 403.2263155879.

The spelling of 65561156 in words is "sixty-five million, five hundred sixty-one thousand, one hundred fifty-six".