550278540 has 72 divisors (see below), whose sum is σ = 1907636640. Its totient is φ = 125777664.

The previous prime is 550278539. The next prime is 550278583. The reversal of 550278540 is 45872055.

It is a happy number.

550278540 is a `hidden beast` number, since 550 + 27 + 85 + 4 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 550278495 and 550278504.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 217105 + ... + 219624.

Almost surely, 2^550278540 is an apocalyptic number.

It is an amenable number.

550278540 is an abundant number, since it is smaller than the sum of its proper divisors (1357358100).

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

550278540 is a wasteful number, since it uses less digits than its factorization.

550278540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 436751 (or 436746 counting only the distinct ones).

The product of its (nonzero) digits is 56000, while the sum is 36.

The square root of 550278540 is about 23458.0165401937. The cubic root of 550278540 is about 819.4595586202.

The spelling of 550278540 in words is "five hundred fifty million, two hundred seventy-eight thousand, five hundred forty".