550931766 has 64 divisors (see below), whose sum is σ = 1384390656. Its totient is φ = 141991200.

The previous prime is 550931741. The next prime is 550931789. The reversal of 550931766 is 667139055.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 55971 + ... + 65073.

It is an arithmetic number, because the mean of its divisors is an integer number (21631104).

Almost surely, 2^550931766 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 550931766, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (692195328).

550931766 is an abundant number, since it is smaller than the sum of its proper divisors (833458890).

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

550931766 is a wasteful number, since it uses less digits than its factorization.

550931766 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9257.

The product of its (nonzero) digits is 170100, while the sum is 42.

The square root of 550931766 is about 23471.9357105459. The cubic root of 550931766 is about 819.7836857536.

The spelling of 550931766 in words is "five hundred fifty million, nine hundred thirty-one thousand, seven hundred sixty-six".