215320050 has 72 divisors (see below), whose sum is σ = 631098000. Its totient is φ = 52197600.

The previous prime is 215320037. The next prime is 215320073. The reversal of 215320050 is 50023512.

It is a happy number.

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

It is a Curzon number.

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, 16800 + ... + 26699.

It is an arithmetic number, because the mean of its divisors is an integer number (8765250).

Almost surely, 2^215320050 is an apocalyptic number.

215320050 is an abundant number, since it is smaller than the sum of its proper divisors (415777950).

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

215320050 is a wasteful number, since it uses less digits than its factorization.

215320050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43528 (or 43520 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 18.

The square root of 215320050 is about 14673.7878545384. The cubic root of 215320050 is about 599.3697548836.

Adding to 215320050 its reverse (50023512), we get a palindrome (265343562).

The spelling of 215320050 in words is "two hundred fifteen million, three hundred twenty thousand, fifty".