50811000 has 64 divisors (see below), whose sum is σ = 158539680. Its totient is φ = 13548800.

The previous prime is 50810951. The next prime is 50811017. The reversal of 50811000 is 11805.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5469 + ... + 11468.

Almost surely, 2^50811000 is an apocalyptic number.

50811000 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

50811000 is an abundant number, since it is smaller than the sum of its proper divisors (107728680).

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

50811000 is a wasteful number, since it uses less digits than its factorization.

50811000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16961 (or 16947 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 15.

The square root of 50811000 is about 7128.1834993215. The cubic root of 50811000 is about 370.3843097223.

Adding to 50811000 its reverse (11805), we get a palindrome (50822805).

The spelling of 50811000 in words is "fifty million, eight hundred eleven thousand".