261165032 has 16 divisors (see below), whose sum is σ = 515457600. Its totient is φ = 123709680.

The previous prime is 261165029. The next prime is 261165043. The reversal of 261165032 is 230561162.

It is a super-2 number, since 2×261165032² = 136414347879122048, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 261164992 and 261165010.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 858944 + ... + 859247.

It is an arithmetic number, because the mean of its divisors is an integer number (32216100).

Almost surely, 2^261165032 is an apocalyptic number.

It is an amenable number.

261165032 is a deficient number, since it is larger than the sum of its proper divisors (254292568).

261165032 is a wasteful number, since it uses less digits than its factorization.

261165032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1718216 (or 1718212 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 261165032 is about 16160.6012264396. The cubic root of 261165032 is about 639.2023200067.

The spelling of 261165032 in words is "two hundred sixty-one million, one hundred sixty-five thousand, thirty-two".