50821400 has 96 divisors (see below), whose sum is σ = 139514880. Its totient is φ = 16848000.

The previous prime is 50821391. The next prime is 50821417. The reversal of 50821400 is 412805.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 42815 + ... + 43985.

It is an arithmetic number, because the mean of its divisors is an integer number (1453280).

Almost surely, 2^50821400 is an apocalyptic number.

50821400 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 50821400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69757440).

50821400 is an abundant number, since it is smaller than the sum of its proper divisors (88693480).

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

50821400 is a wasteful number, since it uses less digits than its factorization.

50821400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1225 (or 1216 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 20.

The square root of 50821400 is about 7128.9129606133. The cubic root of 50821400 is about 370.4095780962.

The spelling of 50821400 in words is "fifty million, eight hundred twenty-one thousand, four hundred".