50509656 has 80 divisors (see below), whose sum is σ = 147668400. Its totient is φ = 16099776.

The previous prime is 50509639. The next prime is 50509687. The reversal of 50509656 is 65690505.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an alternating number because its digits alternate between odd and even.

It is a self number, because there is not a number n which added to its sum of digits gives 50509656.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 13210 + ... + 16598.

It is an arithmetic number, because the mean of its divisors is an integer number (1845855).

Almost surely, 2^50509656 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 50509656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73834200).

50509656 is an abundant number, since it is smaller than the sum of its proper divisors (97158744).

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

50509656 is a wasteful number, since it uses less digits than its factorization.

50509656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3430 (or 3417 counting only the distinct ones).

The product of its (nonzero) digits is 40500, while the sum is 36.

The square root of 50509656 is about 7107.0145630919. The cubic root of 50509656 is about 369.6506466267.

It can be divided in two parts, 5050 and 9656, that added together give a triangular number (14706 = T₁₇₁).

The spelling of 50509656 in words is "fifty million, five hundred nine thousand, six hundred fifty-six".