50156640 has 144 divisors (see below), whose sum is σ = 174270096. Its totient is φ = 13132800.

The previous prime is 50156627. The next prime is 50156657. The reversal of 50156640 is 4665105.

It is a happy number.

50156640 is a `hidden beast` number, since 5 + 0 + 15 + 6 + 640 = 666.

50156640 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (144).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 87555 + ... + 88125.

It is an arithmetic number, because the mean of its divisors is an integer number (1210209).

Almost surely, 2^50156640 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 50156640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (87135048).

50156640 is an abundant number, since it is smaller than the sum of its proper divisors (124113456).

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

50156640 is a wasteful number, since it uses less digits than its factorization.

50156640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 653 (or 642 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 50156640 is about 7082.1352712300. The cubic root of 50156640 is about 368.7874599501.

The spelling of 50156640 in words is "fifty million, one hundred fifty-six thousand, six hundred forty".