50445990 has 240 divisors, whose sum is σ = 166852224. Its totient is φ = 10886400.

The previous prime is 50445977. The next prime is 50445991. The reversal of 50445990 is 9954405.

50445990 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

50445990 is a nontrivial binomial coefficient, being equal to C(10045, 2).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50445991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 1230370 + ... + 1230410.

Almost surely, 2^50445990 is an apocalyptic number.

50445990 is the 10044-th triangular number.

It is a practical number, because each smaller number is the sum of distinct divisors of 50445990, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83426112).

50445990 is an abundant number, since it is smaller than the sum of its proper divisors (116406234).

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

50445990 is a wasteful number, since it uses less digits than its factorization.

50445990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105 (or 89 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 36.

The square root of 50445990 is about 7102.5340548286. The cubic root of 50445990 is about 369.4952699132.

It can be divided in two parts, 50 and 445990, that added together give a triangular number (446040 = T₉₄₄).

The spelling of 50445990 in words is "fifty million, four hundred forty-five thousand, nine hundred ninety".