50771820 has 96 divisors (see below), whose sum is σ = 158780160. Its totient is φ = 12015360.

The previous prime is 50771803. The next prime is 50771849. The reversal of 50771820 is 2817705.

It is a happy number.

It is a super-2 number, since 2×50771820² = 5155555412224800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 27486 + ... + 29274.

It is an arithmetic number, because the mean of its divisors is an integer number (1653960).

Almost surely, 2^50771820 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 50771820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79390080).

50771820 is an abundant number, since it is smaller than the sum of its proper divisors (108008340).

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

50771820 is a wasteful number, since it uses less digits than its factorization.

50771820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1855 (or 1853 counting only the distinct ones).

The product of its (nonzero) digits is 3920, while the sum is 30.

The square root of 50771820 is about 7125.4347235800. The cubic root of 50771820 is about 370.2890850085.

It can be divided in two parts, 507 and 71820, that added together give a palindrome (72327).

The spelling of 50771820 in words is "fifty million, seven hundred seventy-one thousand, eight hundred twenty".