53500050 has 72 divisors (see below), whose sum is σ = 146168100. Its totient is φ = 14025600.

The previous prime is 53500043. The next prime is 53500061. The reversal of 53500050 is 5000535.

It can be written as a sum of positive squares in 6 ways, for example, as 12552849 + 40947201 = 3543^2 + 6399^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 53499996 and 53500032.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 26476 + ... + 28424.

Almost surely, 2^53500050 is an apocalyptic number.

53500050 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 53500050, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73084050).

53500050 is an abundant number, since it is smaller than the sum of its proper divisors (92668050).

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

53500050 is a wasteful number, since it uses less digits than its factorization.

53500050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2028 (or 2020 counting only the distinct ones).

The product of its (nonzero) digits is 375, while the sum is 18.

The square root of 53500050 is about 7314.3728370927. The cubic root of 53500050 is about 376.8062195547.

Adding to 53500050 its reverse (5000535), we get a palindrome (58500585).

The spelling of 53500050 in words is "fifty-three million, five hundred thousand, fifty".