550807780 has 24 divisors (see below), whose sum is σ = 1163389752. Its totient is φ = 219048192.

The previous prime is 550807757. The next prime is 550807781. The reversal of 550807780 is 87708055.

It can be written as a sum of positive squares in 4 ways, for example, as 239073444 + 311734336 = 15462^2 + 17656^2 .

It is not an unprimeable number, because it can be changed into a prime (550807781) 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, 76137 + ... + 83056.

It is an arithmetic number, because the mean of its divisors is an integer number (48474573).

Almost surely, 2^550807780 is an apocalyptic number.

It is an amenable number.

550807780 is an abundant number, since it is smaller than the sum of its proper divisors (612581972).

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

550807780 is a wasteful number, since it uses less digits than its factorization.

550807780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159375 (or 159373 counting only the distinct ones).

The product of its (nonzero) digits is 78400, while the sum is 40.

The square root of 550807780 is about 23469.2944078002. The cubic root of 550807780 is about 819.7221842925.

The spelling of 550807780 in words is "five hundred fifty million, eight hundred seven thousand, seven hundred eighty".