50644566 has 48 divisors (see below), whose sum is σ = 126550944. Its totient is φ = 14337792.

The previous prime is 50644549. The next prime is 50644577. The reversal of 50644566 is 66544605.

It is a happy number.

50644566 is a `hidden beast` number, since 5 + 0 + 644 + 5 + 6 + 6 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 50644566.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 12460 + ... + 16016.

It is an arithmetic number, because the mean of its divisors is an integer number (2636478).

Almost surely, 2^50644566 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 50644566, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (63275472).

50644566 is an abundant number, since it is smaller than the sum of its proper divisors (75906378).

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

50644566 is a wasteful number, since it uses less digits than its factorization.

50644566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3685 (or 3682 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 36.

The square root of 50644566 is about 7116.4995608796. The cubic root of 50644566 is about 369.9794631893.

The spelling of 50644566 in words is "fifty million, six hundred forty-four thousand, five hundred sixty-six".