50643780 has 48 divisors (see below), whose sum is σ = 154695744. Its totient is φ = 12277120.

The previous prime is 50643763. The next prime is 50643781. The reversal of 50643780 is 8734605.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (50643781) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37707 + ... + 39026.

It is an arithmetic number, because the mean of its divisors is an integer number (3222828).

Almost surely, 2^50643780 is an apocalyptic number.

It is an amenable number.

50643780 is an abundant number, since it is smaller than the sum of its proper divisors (104051964).

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

50643780 is a wasteful number, since it uses less digits than its factorization.

50643780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76756 (or 76754 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 33.

The square root of 50643780 is about 7116.4443368862. Note that the first 3 decimals coincide. The cubic root of 50643780 is about 369.9775491613.

The spelling of 50643780 in words is "fifty million, six hundred forty-three thousand, seven hundred eighty".