261060056 has 8 divisors (see below), whose sum is σ = 489487620. Its totient is φ = 130530024.

The previous prime is 261060047. The next prime is 261060061. The reversal of 261060056 is 650060162.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16316246 + ... + 16316261.

Almost surely, 2^261060056 is an apocalyptic number.

It is an amenable number.

261060056 is a deficient number, since it is larger than the sum of its proper divisors (228427564).

261060056 is a wasteful number, since it uses less digits than its factorization.

261060056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32632513 (or 32632509 counting only the distinct ones).

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

The square root of 261060056 is about 16157.3530010333. The cubic root of 261060056 is about 639.1166654882.

The spelling of 261060056 in words is "two hundred sixty-one million, sixty thousand, fifty-six".