50515040 has 48 divisors (see below), whose sum is σ = 119931840. Its totient is φ = 20106240.

The previous prime is 50515039. The next prime is 50515043. The reversal of 50515040 is 4051505.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50515043) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37580 + ... + 38900.

It is an arithmetic number, because the mean of its divisors is an integer number (2498580).

Almost surely, 2^50515040 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 50515040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (59965920).

50515040 is an abundant number, since it is smaller than the sum of its proper divisors (69416800).

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

50515040 is a wasteful number, since it uses less digits than its factorization.

50515040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1575 (or 1567 counting only the distinct ones).

The product of its (nonzero) digits is 500, while the sum is 20.

The square root of 50515040 is about 7107.3933337054. The cubic root of 50515040 is about 369.6637802764.

Adding to 50515040 its reverse (4051505), we get a palindrome (54566545).

The spelling of 50515040 in words is "fifty million, five hundred fifteen thousand, forty".