50931440 has 80 divisors (see below), whose sum is σ = 136800768. Its totient is φ = 17273088.

The previous prime is 50931437. The next prime is 50931467. The reversal of 50931440 is 4413905.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 57239 + ... + 58121.

Almost surely, 2^50931440 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 50931440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (68400384).

50931440 is an abundant number, since it is smaller than the sum of its proper divisors (85869328).

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

50931440 is a wasteful number, since it uses less digits than its factorization.

50931440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1006 (or 1000 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 50931440 is about 7136.6266540993. The cubic root of 50931440 is about 370.6767259719.

The spelling of 50931440 in words is "fifty million, nine hundred thirty-one thousand, four hundred forty".