50217540 has 48 divisors (see below), whose sum is σ = 141704640. Its totient is φ = 13287040.

The previous prime is 50217527. The next prime is 50217577. The reversal of 50217540 is 4571205.

It is a self number, because there is not a number n which added to its sum of digits gives 50217540.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4666 + ... + 11054.

It is an arithmetic number, because the mean of its divisors is an integer number (2952180).

Almost surely, 2^50217540 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 50217540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70852320).

50217540 is an abundant number, since it is smaller than the sum of its proper divisors (91487100).

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

50217540 is a wasteful number, since it uses less digits than its factorization.

50217540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6532 (or 6530 counting only the distinct ones).

The product of its (nonzero) digits is 1400, while the sum is 24.

The square root of 50217540 is about 7086.4335176448. The cubic root of 50217540 is about 368.9366596871.

Adding to 50217540 its reverse (4571205), we get a palindrome (54788745).

It can be divided in two parts, 5021 and 7540, that added together give a triangular number (12561 = T₁₅₈).

The spelling of 50217540 in words is "fifty million, two hundred seventeen thousand, five hundred forty".