261110045 has 16 divisors (see below), whose sum is σ = 361384320. Its totient is φ = 177401664.

The previous prime is 261110041. The next prime is 261110077. The reversal of 261110045 is 540011162.

261110045 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 261110045 - 2² = 261110041 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 261109999 and 261110026.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (261110041) 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, 30407 + ... + 38036.

It is an arithmetic number, because the mean of its divisors is an integer number (22586520).

Almost surely, 2^261110045 is an apocalyptic number.

It is an amenable number.

261110045 is a deficient number, since it is larger than the sum of its proper divisors (100274275).

261110045 is a wasteful number, since it uses less digits than its factorization.

261110045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68564.

The product of its (nonzero) digits is 240, while the sum is 20.

The square root of 261110045 is about 16158.8998697312. The cubic root of 261110045 is about 639.1574565670.

The spelling of 261110045 in words is "two hundred sixty-one million, one hundred ten thousand, forty-five".