550331964 has 144 divisors (see below), whose sum is σ = 1767700480. Its totient is φ = 140434560.

The previous prime is 550331963. The next prime is 550331981. The reversal of 550331964 is 469133055.

550331964 is a `hidden beast` number, since 550 + 33 + 19 + 64 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (550331963) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 98847 + ... + 104265.

Almost surely, 2^550331964 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 550331964, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (883850240).

550331964 is an abundant number, since it is smaller than the sum of its proper divisors (1217368516).

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

550331964 is a wasteful number, since it uses less digits than its factorization.

550331964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5480 (or 5475 counting only the distinct ones).

The product of its (nonzero) digits is 48600, while the sum is 36.

The square root of 550331964 is about 23459.1552277570. The cubic root of 550331964 is about 819.4860769424.

The spelling of 550331964 in words is "five hundred fifty million, three hundred thirty-one thousand, nine hundred sixty-four".