50780556 has 18 divisors (see below), whose sum is σ = 128362052. Its totient is φ = 16926840.

The previous prime is 50780507. The next prime is 50780579. The reversal of 50780556 is 65508705.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 1410571 = 50780556 / (5 + 0 + 7 + 8 + 0 + 5 + 5 + 6).

It is a self number, because there is not a number n which added to its sum of digits gives 50780556.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 705250 + ... + 705321.

Almost surely, 2^50780556 is an apocalyptic number.

It is an amenable number.

50780556 is an abundant number, since it is smaller than the sum of its proper divisors (77581496).

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

50780556 is a wasteful number, since it uses less digits than its factorization.

50780556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1410581 (or 1410576 counting only the distinct ones).

The product of its (nonzero) digits is 42000, while the sum is 36.

The square root of 50780556 is about 7126.0477124420. The cubic root of 50780556 is about 370.3103215916.

The spelling of 50780556 in words is "fifty million, seven hundred eighty thousand, five hundred fifty-six".