550643574 has 48 divisors (see below), whose sum is σ = 1197724752. Its totient is φ = 168689664.

The previous prime is 550643573. The next prime is 550643581. The reversal of 550643574 is 475346055.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (550643573) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 259542 + ... + 261654.

It is an arithmetic number, because the mean of its divisors is an integer number (24952599).

Almost surely, 2^550643574 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 550643574, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (598862376).

550643574 is an abundant number, since it is smaller than the sum of its proper divisors (647081178).

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

550643574 is a wasteful number, since it uses less digits than its factorization.

550643574 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2401 (or 2388 counting only the distinct ones).

The product of its (nonzero) digits is 252000, while the sum is 39.

The square root of 550643574 is about 23465.7958313798. The cubic root of 550643574 is about 819.6407180750.

The spelling of 550643574 in words is "five hundred fifty million, six hundred forty-three thousand, five hundred seventy-four".