50500000 has 84 divisors (see below), whose sum is σ = 125506206. Its totient is φ = 20000000.

The previous prime is 50499989. The next prime is 50500001. The reversal of 50500000 is 505.

It can be written as a sum of positive squares in 7 ways, for example, as 12702096 + 37797904 = 3564^2 + 6148^2 .

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a super Niven number, because it is divisible the sum of any subset of its (nonzero) digits.

It is a self number, because there is not a number n which added to its sum of digits gives 50500000.

It is not an unprimeable number, because it can be changed into a prime (50500001) by changing a digit.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 499950 + ... + 500050.

Almost surely, 2^50500000 is an apocalyptic number.

50500000 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 50500000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (62753103).

50500000 is an abundant number, since it is smaller than the sum of its proper divisors (75006206).

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

50500000 is an frugal number, since it uses more digits than its factorization.

50500000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141 (or 108 counting only the distinct ones).

The product of its (nonzero) digits is 25, while the sum is 10.

The square root of 50500000 is about 7106.3352017759. The cubic root of 50500000 is about 369.6270895857.

Adding to 50500000 its reverse (505), we get a palindrome (50500505).

50500000 divided by its reverse (505) gives a 5-th power (100000 = 10⁵).

It can be divided in two parts, 50 and 500000, that multiplied together give a square (25000000 = 5000²).

The spelling of 50500000 in words is "fifty million, five hundred thousand".