50512640 has 144 divisors (see below), whose sum is σ = 133432320. Its totient is φ = 18247680.

The previous prime is 50512633. The next prime is 50512643. The reversal of 50512640 is 4621505.

It is not an unprimeable number, because it can be changed into a prime (50512643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 753887 + ... + 753953.

Almost surely, 2^50512640 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 50512640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (66716160).

50512640 is an abundant number, since it is smaller than the sum of its proper divisors (82919680).

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

50512640 is a wasteful number, since it uses less digits than its factorization.

50512640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138 (or 124 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 50512640 is about 7107.2244934292. The cubic root of 50512640 is about 369.6579258673.

The spelling of 50512640 in words is "fifty million, five hundred twelve thousand, six hundred forty".