50917440 has 112 divisors (see below), whose sum is σ = 184781952. Its totient is φ = 11636736.

The previous prime is 50917421. The next prime is 50917441. The reversal of 50917440 is 4471905.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (112).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 50917398 and 50917407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50917441) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2932 + ... + 10508.

Almost surely, 2^50917440 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 50917440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (92390976).

50917440 is an abundant number, since it is smaller than the sum of its proper divisors (133864512).

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

50917440 is a wasteful number, since it uses less digits than its factorization.

50917440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7604 (or 7594 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 30.

The square root of 50917440 is about 7135.6457311164. The cubic root of 50917440 is about 370.6427590697.

The spelling of 50917440 in words is "fifty million, nine hundred seventeen thousand, four hundred forty".