41261805 has 80 divisors (see below), whose sum is σ = 84523824. Its totient is φ = 19077120.

The previous prime is 41261791. The next prime is 41261813. The reversal of 41261805 is 50816214.

41261805 is a `hidden beast` number, since 41 + 2 + 618 + 0 + 5 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 1798281 + 39463524 = 1341^2 + 6282^2 .

It is not a de Polignac number, because 41261805 - 2⁶ = 41261741 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 89275 + ... + 89735.

Almost surely, 2^41261805 is an apocalyptic number.

41261805 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

41261805 is an abundant number, since it is smaller than the sum of its proper divisors (43262019).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

41261805 is a wasteful number, since it uses less digits than its factorization.

41261805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 508 (or 499 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The square root of 41261805 is about 6423.5352415940. The cubic root of 41261805 is about 345.5541189816.

The spelling of 41261805 in words is "forty-one million, two hundred sixty-one thousand, eight hundred five".