261352576 has 16 divisors (see below), whose sum is σ = 520663590. Its totient is φ = 130676224.

The previous prime is 261352499. The next prime is 261352589. The reversal of 261352576 is 675253162.

261352576 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 259854400 + 1498176 = 16120^2 + 1224^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1020781 + ... + 1021036.

Almost surely, 2^261352576 is an apocalyptic number.

It is an amenable number.

261352576 is a deficient number, since it is larger than the sum of its proper divisors (259311014).

261352576 is an equidigital number, since it uses as much as digits as its factorization.

261352576 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2041831 (or 2041819 counting only the distinct ones).

The product of its digits is 75600, while the sum is 37.

The square root of 261352576 is about 16166.4026920029. The cubic root of 261352576 is about 639.3552882599.

The spelling of 261352576 in words is "two hundred sixty-one million, three hundred fifty-two thousand, five hundred seventy-six".