261283059 has 12 divisors (see below), whose sum is σ = 393818256. Its totient is φ = 166615152.

The previous prime is 261283039. The next prime is 261283091. The reversal of 261283059 is 950382162.

261283059 is a `hidden beast` number, since 2 + 612 + 8 + 30 + 5 + 9 = 666.

It is not a de Polignac number, because 261283059 - 2⁵ = 261283027 is a prime.

It is not an unprimeable number, because it can be changed into a prime (261283039) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 630912 + ... + 631325.

It is an arithmetic number, because the mean of its divisors is an integer number (32818188).

Almost surely, 2^261283059 is an apocalyptic number.

261283059 is a deficient number, since it is larger than the sum of its proper divisors (132535197).

261283059 is a wasteful number, since it uses less digits than its factorization.

261283059 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1262266 (or 1262263 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 261283059 is about 16164.2525035957. The cubic root of 261283059 is about 639.2985960021.

The spelling of 261283059 in words is "two hundred sixty-one million, two hundred eighty-three thousand, fifty-nine".