261560224 has 24 divisors (see below), whose sum is σ = 521156160. Its totient is φ = 129203136.

The previous prime is 261560219. The next prime is 261560261. The reversal of 261560224 is 422065162.

It is a junction number, because it is equal to n+sod(n) for n = 261560192 and 261560201.

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, 46584 + ... + 51895.

It is an arithmetic number, because the mean of its divisors is an integer number (21714840).

Almost surely, 2^261560224 is an apocalyptic number.

It is an amenable number.

261560224 is a deficient number, since it is larger than the sum of its proper divisors (259595936).

261560224 is an equidigital number, since it uses as much as digits as its factorization.

261560224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98572 (or 98564 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 261560224 is about 16172.8236248343. The cubic root of 261560224 is about 639.5245687830.

The spelling of 261560224 in words is "two hundred sixty-one million, five hundred sixty thousand, two hundred twenty-four".