50556640 has 48 divisors (see below), whose sum is σ = 126472752. Its totient is φ = 19032064.

The previous prime is 50556637. The next prime is 50556641. The reversal of 50556640 is 4665505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50556641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6574 + ... + 12013.

It is an arithmetic number, because the mean of its divisors is an integer number (2634849).

Almost surely, 2^50556640 is an apocalyptic number.

It is an amenable number.

50556640 is an abundant number, since it is smaller than the sum of its proper divisors (75916112).

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

50556640 is a wasteful number, since it uses less digits than its factorization.

50556640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18619 (or 18611 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 31.

The square root of 50556640 is about 7110.3192614678. The cubic root of 50556640 is about 369.7652272503.

The spelling of 50556640 in words is "fifty million, five hundred fifty-six thousand, six hundred forty".