261560570 has 32 divisors (see below), whose sum is σ = 495331200. Its totient is φ = 99297856.

The previous prime is 261560561. The next prime is 261560573. The reversal of 261560570 is 75065162.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (261560573) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9467 + ... + 24753.

It is an arithmetic number, because the mean of its divisors is an integer number (15479100).

Almost surely, 2^261560570 is an apocalyptic number.

261560570 is a deficient number, since it is larger than the sum of its proper divisors (233770630).

261560570 is a wasteful number, since it uses less digits than its factorization.

261560570 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15382.

The product of its (nonzero) digits is 12600, while the sum is 32.

The square root of 261560570 is about 16172.8343217879. The cubic root of 261560570 is about 639.5248507772.

The spelling of 261560570 in words is "two hundred sixty-one million, five hundred sixty thousand, five hundred seventy".