50542440 has 128 divisors (see below), whose sum is σ = 165110400. Its totient is φ = 12303360.

The previous prime is 50542433. The next prime is 50542487. The reversal of 50542440 is 4424505.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 50542440.

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, 279150 + ... + 279330.

It is an arithmetic number, because the mean of its divisors is an integer number (1289925).

Almost surely, 2^50542440 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 50542440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (82555200).

50542440 is an abundant number, since it is smaller than the sum of its proper divisors (114567960).

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

50542440 is a wasteful number, since it uses less digits than its factorization.

50542440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 387 (or 383 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 24.

The square root of 50542440 is about 7109.3206426493. The cubic root of 50542440 is about 369.7306049739.

Adding to 50542440 its reverse (4424505), we get a palindrome (54966945).

The spelling of 50542440 in words is "fifty million, five hundred forty-two thousand, four hundred forty".