50550090 has 64 divisors (see below), whose sum is σ = 128777472. Its totient is φ = 12672000.

The previous prime is 50550077. The next prime is 50550107. The reversal of 50550090 is 9005505.

It is a self number, because there is not a number n which added to its sum of digits gives 50550090.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 41490 + ... + 42690.

It is an arithmetic number, because the mean of its divisors is an integer number (2012148).

Almost surely, 2^50550090 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 50550090, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (64388736).

50550090 is an abundant number, since it is smaller than the sum of its proper divisors (78227382).

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

50550090 is a wasteful number, since it uses less digits than its factorization.

50550090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1295.

The product of its (nonzero) digits is 1125, while the sum is 24.

The square root of 50550090 is about 7109.8586483839. The cubic root of 50550090 is about 369.7492579214.

Adding to 50550090 its reverse (9005505), we get a palindrome (59555595).

The spelling of 50550090 in words is "fifty million, five hundred fifty thousand, ninety".