505541806 has 16 divisors (see below), whose sum is σ = 945429120. Its totient is φ = 196964280.

The previous prime is 505541791. The next prime is 505541807. The reversal of 505541806 is 608145505.

It is a happy number.

It is a super-2 number, since 2×505541806² = 511145035227483272, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505541807) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1641216 + ... + 1641523.

It is an arithmetic number, because the mean of its divisors is an integer number (59089320).

Almost surely, 2^505541806 is an apocalyptic number.

505541806 is a deficient number, since it is larger than the sum of its proper divisors (439887314).

505541806 is a wasteful number, since it uses less digits than its factorization.

505541806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3282759.

The product of its (nonzero) digits is 24000, while the sum is 34.

The square root of 505541806 is about 22484.2568478480. The cubic root of 505541806 is about 796.6221147295.

The spelling of 505541806 in words is "five hundred five million, five hundred forty-one thousand, eight hundred six".