261546160 has 20 divisors (see below), whose sum is σ = 608095008. Its totient is φ = 104618432.

The previous prime is 261546137. The next prime is 261546161. The reversal of 261546160 is 61645162.

261546160 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (20).

It is not an unprimeable number, because it can be changed into a prime (261546161) 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, 1634584 + ... + 1634743.

Almost surely, 2^261546160 is an apocalyptic number.

261546160 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

261546160 is an abundant number, since it is smaller than the sum of its proper divisors (346548848).

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

261546160 is a wasteful number, since it uses less digits than its factorization.

261546160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3269340 (or 3269334 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 261546160 is about 16172.3888155090. The cubic root of 261546160 is about 639.5131062415.

The spelling of 261546160 in words is "two hundred sixty-one million, five hundred forty-six thousand, one hundred sixty".