50990070 has 64 divisors (see below), whose sum is σ = 127650816. Its totient is φ = 13023360.

The previous prime is 50990063. The next prime is 50990077. The reversal of 50990070 is 7009905.

It is a happy number.

50990070 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (50990063) and next prime (50990077).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50990077) 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 31 ways as a sum of consecutive naturals, for example, 78487 + ... + 79133.

It is an arithmetic number, because the mean of its divisors is an integer number (1994544).

Almost surely, 2^50990070 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 50990070, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (63825408).

50990070 is an abundant number, since it is smaller than the sum of its proper divisors (76660746).

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

50990070 is a wasteful number, since it uses less digits than its factorization.

50990070 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 765.

The product of its (nonzero) digits is 2835, while the sum is 30.

The square root of 50990070 is about 7140.7331556361. The cubic root of 50990070 is about 370.8189069280.

Adding to 50990070 its reverse (7009905), we get a palindrome (57999975).

The spelling of 50990070 in words is "fifty million, nine hundred ninety thousand, seventy".