261096512 has 28 divisors (see below), whose sum is σ = 535983180. Its totient is φ = 126045696.

The previous prime is 261096509. The next prime is 261096527. The reversal of 261096512 is 215690162.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 94789696 + 166306816 = 9736^2 + 12896^2 .

It is a super-2 number, since 2×261096512² = 136342777157132288, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (32).

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, 68483 + ... + 72194.

Almost surely, 2^261096512 is an apocalyptic number.

It is an amenable number.

261096512 is an abundant number, since it is smaller than the sum of its proper divisors (274886668).

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

261096512 is a wasteful number, since it uses less digits than its factorization.

261096512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140718 (or 140708 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 261096512 is about 16158.4811167387. The cubic root of 261096512 is about 639.1464141382.

The spelling of 261096512 in words is "two hundred sixty-one million, ninety-six thousand, five hundred twelve".