280050055550 has 24 divisors (see below), whose sum is σ = 523803137400. Its totient is φ = 111394208480.

The previous prime is 280050055541. The next prime is 280050055553. The reversal of 280050055550 is 55550050082.

It is a happy number.

It is a super-2 number, since 2×280050055550² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 280050055550.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (280050055553) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15636305 + ... + 15654204.

It is an arithmetic number, because the mean of its divisors is an integer number (21825130725).

Almost surely, 2^280050055550 is an apocalyptic number.

280050055550 is a deficient number, since it is larger than the sum of its proper divisors (243753081850).

280050055550 is a wasteful number, since it uses less digits than its factorization.

280050055550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31290700 (or 31290695 counting only the distinct ones).

The product of its (nonzero) digits is 50000, while the sum is 35.

The spelling of 280050055550 in words is "two hundred eighty billion, fifty million, fifty-five thousand, five hundred fifty".