50581640 has 16 divisors (see below), whose sum is σ = 113808780. Its totient is φ = 20232640.

The previous prime is 50581639. The next prime is 50581673. The reversal of 50581640 is 4618505.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 48748324 + 1833316 = 6982^2 + 1354^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 632231 + ... + 632310.

Almost surely, 2^50581640 is an apocalyptic number.

It is an amenable number.

50581640 is an abundant number, since it is smaller than the sum of its proper divisors (63227140).

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

50581640 is a wasteful number, since it uses less digits than its factorization.

50581640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1264552 (or 1264548 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 29.

The square root of 50581640 is about 7112.0770524510. The cubic root of 50581640 is about 369.8261662115.

The spelling of 50581640 in words is "fifty million, five hundred eighty-one thousand, six hundred forty".