50831640 has 48 divisors (see below), whose sum is σ = 165204000. Its totient is φ = 13555008.

The previous prime is 50831639. The next prime is 50831657. The reversal of 50831640 is 4613805.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 70240 + ... + 70959.

It is an arithmetic number, because the mean of its divisors is an integer number (3441750).

Almost surely, 2^50831640 is an apocalyptic number.

It is an amenable number.

50831640 is an abundant number, since it is smaller than the sum of its proper divisors (114372360).

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

50831640 is a wasteful number, since it uses less digits than its factorization.

50831640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141216 (or 141209 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 50831640 is about 7129.6311265030. The cubic root of 50831640 is about 370.4344543580.

The spelling of 50831640 in words is "fifty million, eight hundred thirty-one thousand, six hundred forty".