261104253 has 16 divisors (see below), whose sum is σ = 352542720. Its totient is φ = 171881136.

The previous prime is 261104209. The next prime is 261104269. The reversal of 261104253 is 352401162.

261104253 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 261104253 - 2⁶ = 261104189 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (261104203) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 84978 + ... + 87996.

It is an arithmetic number, because the mean of its divisors is an integer number (22033920).

Almost surely, 2^261104253 is an apocalyptic number.

It is an amenable number.

261104253 is a deficient number, since it is larger than the sum of its proper divisors (91438467).

261104253 is a wasteful number, since it uses less digits than its factorization.

261104253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3376.

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 261104253 is about 16158.7206486157. The cubic root of 261104253 is about 639.1527305554.

The spelling of 261104253 in words is "two hundred sixty-one million, one hundred four thousand, two hundred fifty-three".