50817540 has 96 divisors (see below), whose sum is σ = 147087360. Its totient is φ = 13104000.

The previous prime is 50817523. The next prime is 50817551. The reversal of 50817540 is 4571805.

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 = 50817498 and 50817507.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 336465 + ... + 336615.

It is an arithmetic number, because the mean of its divisors is an integer number (1532160).

Almost surely, 2^50817540 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 50817540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73543680).

50817540 is an abundant number, since it is smaller than the sum of its proper divisors (96269820).

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

50817540 is a wasteful number, since it uses less digits than its factorization.

50817540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 313 (or 311 counting only the distinct ones).

The product of its (nonzero) digits is 5600, while the sum is 30.

The square root of 50817540 is about 7128.6422269602. The cubic root of 50817540 is about 370.4002000444.

It can be divided in two parts, 5081 and 7540, that added together give a palindrome (12621).

The spelling of 50817540 in words is "fifty million, eight hundred seventeen thousand, five hundred forty".