50917720 has 128 divisors (see below), whose sum is σ = 146188800. Its totient is φ = 15538176.

The previous prime is 50917709. The next prime is 50917733. The reversal of 50917720 is 2771905.

It is a super-2 number, since 2×50917720² = 5185228419996800, which contains 22 as substring.

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 31 ways as a sum of consecutive naturals, for example, 90159 + ... + 90721.

It is an arithmetic number, because the mean of its divisors is an integer number (1142100).

Almost surely, 2^50917720 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 50917720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73094400).

50917720 is an abundant number, since it is smaller than the sum of its proper divisors (95271080).

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

50917720 is a wasteful number, since it uses less digits than its factorization.

50917720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 617 (or 613 counting only the distinct ones).

The product of its (nonzero) digits is 4410, while the sum is 31.

The square root of 50917720 is about 7135.6653508976. The cubic root of 50917720 is about 370.6434384687.

The spelling of 50917720 in words is "fifty million, nine hundred seventeen thousand, seven hundred twenty".