50891616 has 72 divisors (see below), whose sum is σ = 146535480. Its totient is φ = 16751616.

The previous prime is 50891611. The next prime is 50891641. The reversal of 50891616 is 61619805.

50891616 is a `hidden beast` number, since 508 + 91 + 61 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50891611) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22840 + ... + 24968.

It is an arithmetic number, because the mean of its divisors is an integer number (2035215).

Almost surely, 2^50891616 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 50891616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73267740).

50891616 is an abundant number, since it is smaller than the sum of its proper divisors (95643864).

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

50891616 is a wasteful number, since it uses less digits than its factorization.

50891616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2228 (or 2217 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 36.

The square root of 50891616 is about 7133.8359947507. The cubic root of 50891616 is about 370.5800883541.

The spelling of 50891616 in words is "fifty million, eight hundred ninety-one thousand, six hundred sixteen".