261152256 has 40 divisors (see below), whose sum is σ = 695730024. Its totient is φ = 87050240.

The previous prime is 261152239. The next prime is 261152261. The reversal of 261152256 is 652251162.

261152256 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

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, 83475 + ... + 86546.

Almost surely, 2^261152256 is an apocalyptic number.

It is an amenable number.

261152256 is an abundant number, since it is smaller than the sum of its proper divisors (434577768).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

261152256 is an equidigital number, since it uses as much as digits as its factorization.

261152256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170042 (or 170026 counting only the distinct ones).

The product of its digits is 7200, while the sum is 30.

The square root of 261152256 is about 16160.2059392818. The cubic root of 261152256 is about 639.1918967354.

The spelling of 261152256 in words is "two hundred sixty-one million, one hundred fifty-two thousand, two hundred fifty-six".