805256541 has 6 divisors (see below), whose sum is σ = 1163148350. Its totient is φ = 536837688.

The previous prime is 805256531. The next prime is 805256587. The reversal of 805256541 is 145652508.

805256541 is a `hidden beast` number, since 8 + 0 + 52 + 565 + 41 = 666.

It can be written as a sum of positive squares in only one way, i.e., 593117316 + 212139225 = 24354^2 + 14565^2 .

It is not a de Polignac number, because 805256541 - 2⁵ = 805256509 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 805256496 and 805256505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (805256531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 44736466 + ... + 44736483.

Almost surely, 2^805256541 is an apocalyptic number.

It is an amenable number.

805256541 is a deficient number, since it is larger than the sum of its proper divisors (357891809).

805256541 is a wasteful number, since it uses less digits than its factorization.

805256541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89472955 (or 89472952 counting only the distinct ones).

The product of its (nonzero) digits is 48000, while the sum is 36.

The square root of 805256541 is about 28377.0424991753. The cubic root of 805256541 is about 930.3465548536.

The spelling of 805256541 in words is "eight hundred five million, two hundred fifty-six thousand, five hundred forty-one".