261560050 has 24 divisors (see below), whose sum is σ = 487320372. Its totient is φ = 104448000.

The previous prime is 261560041. The next prime is 261560063. The reversal of 261560050 is 50065162.

261560050 is digitally balanced in base 3, 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 6 ways, for example, as 137616361 + 123943689 = 11731^2 + 11133^2 .

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a junction number, because it is equal to n+sod(n) for n = 261559997 and 261560024.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 27970 + ... + 36130.

Almost surely, 2^261560050 is an apocalyptic number.

261560050 is a deficient number, since it is larger than the sum of its proper divisors (225760322).

261560050 is a wasteful number, since it uses less digits than its factorization.

261560050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8814 (or 8809 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 261560050 is about 16172.8182454389. The cubic root of 261560050 is about 639.5244269708.

The spelling of 261560050 in words is "two hundred sixty-one million, five hundred sixty thousand, fifty".