261302056 has 16 divisors (see below), whose sum is σ = 501336000. Its totient is φ = 127612464.

The previous prime is 261302051. The next prime is 261302159. The reversal of 261302056 is 650203162.

261302056 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 261302056.

It is not an unprimeable number, because it can be changed into a prime (261302051) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 379456 + ... + 380143.

It is an arithmetic number, because the mean of its divisors is an integer number (31333500).

Almost surely, 2^261302056 is an apocalyptic number.

It is an amenable number.

261302056 is a deficient number, since it is larger than the sum of its proper divisors (240033944).

261302056 is a wasteful number, since it uses less digits than its factorization.

261302056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 759648 (or 759644 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 261302056 is about 16164.8401167472. The cubic root of 261302056 is about 639.3140893667.

The spelling of 261302056 in words is "two hundred sixty-one million, three hundred two thousand, fifty-six".