261350485 has 16 divisors (see below), whose sum is σ = 342974592. Its totient is φ = 189604800.

The previous prime is 261350477. The next prime is 261350497. The reversal of 261350485 is 584053162.

It is not a de Polignac number, because 261350485 - 2³ = 261350477 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 261350485.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17512 + ... + 28798.

It is an arithmetic number, because the mean of its divisors is an integer number (21435912).

Almost surely, 2^261350485 is an apocalyptic number.

It is an amenable number.

261350485 is a deficient number, since it is larger than the sum of its proper divisors (81624107).

261350485 is a wasteful number, since it uses less digits than its factorization.

261350485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11724.

The product of its (nonzero) digits is 28800, while the sum is 34.

The square root of 261350485 is about 16166.3380207145. The cubic root of 261350485 is about 639.3535831616.

The spelling of 261350485 in words is "two hundred sixty-one million, three hundred fifty thousand, four hundred eighty-five".