550666506 has 32 divisors (see below), whose sum is σ = 1237622400. Its totient is φ = 162068544.

The previous prime is 550666489. The next prime is 550666511. The reversal of 550666506 is 605666055.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 151681 + ... + 155268.

It is an arithmetic number, because the mean of its divisors is an integer number (38675700).

Almost surely, 2^550666506 is an apocalyptic number.

550666506 is an abundant number, since it is smaller than the sum of its proper divisors (686955894).

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

550666506 is a wasteful number, since it uses less digits than its factorization.

550666506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 306990.

The product of its (nonzero) digits is 162000, while the sum is 39.

The square root of 550666506 is about 23466.2844523798. The cubic root of 550666506 is about 819.6520961188.

The spelling of 550666506 in words is "five hundred fifty million, six hundred sixty-six thousand, five hundred six".