50864640 has 160 divisors (see below), whose sum is σ = 167935680. Its totient is φ = 13123584.

The previous prime is 50864633. The next prime is 50864647. The reversal of 50864640 is 4646805.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (50864633) and next prime (50864647).

It is a tau number, because it is divible by the number of its divisors (160).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50864647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 284071 + ... + 284249.

It is an arithmetic number, because the mean of its divisors is an integer number (1049598).

Almost surely, 2^50864640 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 50864640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83967840).

50864640 is an abundant number, since it is smaller than the sum of its proper divisors (117071040).

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

50864640 is a wasteful number, since it uses less digits than its factorization.

50864640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242 (or 226 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 33.

The square root of 50864640 is about 7131.9450362436. The cubic root of 50864640 is about 370.5145992743.

The spelling of 50864640 in words is "fifty million, eight hundred sixty-four thousand, six hundred forty".