261264059 has 8 divisors (see below), whose sum is σ = 298711008. Its totient is φ = 223848000.

The previous prime is 261264053. The next prime is 261264077. The reversal of 261264059 is 950462162.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 261264059 - 2¹² = 261259963 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (261264053) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14789 + ... + 27225.

It is an arithmetic number, because the mean of its divisors is an integer number (37338876).

Almost surely, 2^261264059 is an apocalyptic number.

261264059 is a deficient number, since it is larger than the sum of its proper divisors (37446949).

261264059 is a wasteful number, since it uses less digits than its factorization.

261264059 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15445.

The product of its (nonzero) digits is 25920, while the sum is 35.

The square root of 261264059 is about 16163.6647762814. The cubic root of 261264059 is about 639.2830994396.

The spelling of 261264059 in words is "two hundred sixty-one million, two hundred sixty-four thousand, fifty-nine".