50405400 has 144 divisors (see below), whose sum is σ = 173660760. Its totient is φ = 13094400.

The previous prime is 50405387. The next prime is 50405401. The reversal of 50405400 is 450405.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50405401) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 73459 + ... + 74141.

Almost surely, 2^50405400 is an apocalyptic number.

50405400 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 50405400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86830380).

50405400 is an abundant number, since it is smaller than the sum of its proper divisors (123255360).

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

50405400 is a wasteful number, since it uses less digits than its factorization.

50405400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 746 (or 734 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 18.

The square root of 50405400 is about 7099.6760489476. The cubic root of 50405400 is about 369.3961418667.

Adding to 50405400 its reverse (450405), we get a palindrome (50855805).

It can be divided in two parts, 50405 and 400, that added together give a palindrome (50805).

The spelling of 50405400 in words is "fifty million, four hundred five thousand, four hundred".