50989780 has 24 divisors (see below), whose sum is σ = 108083808. Its totient is φ = 20204448.

The previous prime is 50989769. The next prime is 50989789. The reversal of 50989780 is 8798905.

It is a self number, because there is not a number n which added to its sum of digits gives 50989780.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50989789) 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, 9774 + ... + 14053.

It is an arithmetic number, because the mean of its divisors is an integer number (4503492).

Almost surely, 2^50989780 is an apocalyptic number.

It is an amenable number.

50989780 is an abundant number, since it is smaller than the sum of its proper divisors (57094028).

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

50989780 is a wasteful number, since it uses less digits than its factorization.

50989780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23943 (or 23941 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 46.

The square root of 50989780 is about 7140.7128495690. The cubic root of 50989780 is about 370.8182039304.

It can be divided in two parts, 5098 and 9780, that added together give a triangular number (14878 = T₁₇₂).

The spelling of 50989780 in words is "fifty million, nine hundred eighty-nine thousand, seven hundred eighty".