261100444 has 24 divisors (see below), whose sum is σ = 499388400. Its totient is φ = 118462080.

The previous prime is 261100421. The next prime is 261100459. The reversal of 261100444 is 444001162.

261100444 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19822 + ... + 30250.

It is an arithmetic number, because the mean of its divisors is an integer number (20807850).

Almost surely, 2^261100444 is an apocalyptic number.

It is an amenable number.

261100444 is a deficient number, since it is larger than the sum of its proper divisors (238287956).

261100444 is a wasteful number, since it uses less digits than its factorization.

261100444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11013 (or 11011 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 261100444 is about 16158.6027861322. The cubic root of 261100444 is about 639.1496225445.

The spelling of 261100444 in words is "two hundred sixty-one million, one hundred thousand, four hundred forty-four".