50661140 has 48 divisors (see below), whose sum is σ = 110111232. Its totient is φ = 19564416.

The previous prime is 50661133. The next prime is 50661167. The reversal of 50661140 is 4116605.

It is a super-2 number, since 2×50661140² = 5133102212199200, which contains 22 as substring.

It is a congruent number.

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, 164867 + ... + 165173.

It is an arithmetic number, because the mean of its divisors is an integer number (2293984).

Almost surely, 2^50661140 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 50661140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (55055616).

50661140 is an abundant number, since it is smaller than the sum of its proper divisors (59450092).

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

50661140 is a wasteful number, since it uses less digits than its factorization.

50661140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 576 (or 574 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 50661140 is about 7117.6639426149. The cubic root of 50661140 is about 370.0198187582.

Adding to 50661140 its reverse (4116605), we get a palindrome (54777745).

The spelling of 50661140 in words is "fifty million, six hundred sixty-one thousand, one hundred forty".