261160516 has 6 divisors (see below), whose sum is σ = 457030910. Its totient is φ = 130580256.

The previous prime is 261160483. The next prime is 261160519. The reversal of 261160516 is 615061162.

It can be written as a sum of positive squares in only one way, i.e., 257474116 + 3686400 = 16046^2 + 1920^2 .

It is not an unprimeable number, because it can be changed into a prime (261160519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32645061 + ... + 32645068.

Almost surely, 2^261160516 is an apocalyptic number.

It is an amenable number.

261160516 is a deficient number, since it is larger than the sum of its proper divisors (195870394).

261160516 is a wasteful number, since it uses less digits than its factorization.

261160516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65290133 (or 65290131 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 261160516 is about 16160.4615033111. The cubic root of 261160516 is about 639.1986356770.

The spelling of 261160516 in words is "two hundred sixty-one million, one hundred sixty thousand, five hundred sixteen".