50521040 has 20 divisors (see below), whose sum is σ = 117461604. Its totient is φ = 20208384.

The previous prime is 50521027. The next prime is 50521043. The reversal of 50521040 is 4012505.

It can be written as a sum of positive squares in 2 ways, for example, as 13017664 + 37503376 = 3608^2 + 6124^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50521043) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 315677 + ... + 315836.

Almost surely, 2^50521040 is an apocalyptic number.

It is an amenable number.

50521040 is an abundant number, since it is smaller than the sum of its proper divisors (66940564).

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

50521040 is a wasteful number, since it uses less digits than its factorization.

50521040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 631526 (or 631520 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 17.

The square root of 50521040 is about 7107.8154168493. The cubic root of 50521040 is about 369.6784154878.

Adding to 50521040 its reverse (4012505), we get a palindrome (54533545).

The spelling of 50521040 in words is "fifty million, five hundred twenty-one thousand, forty".