550572100 has 72 divisors (see below), whose sum is σ = 1314165888. Its totient is φ = 198940800.

The previous prime is 550572089. The next prime is 550572103. The reversal of 550572100 is 1275055.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is not an unprimeable number, because it can be changed into a prime (550572103) 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, 56595 + ... + 65605.

It is an arithmetic number, because the mean of its divisors is an integer number (18252304).

Almost surely, 2^550572100 is an apocalyptic number.

550572100 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 550572100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (657082944).

550572100 is an abundant number, since it is smaller than the sum of its proper divisors (763593788).

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

550572100 is a wasteful number, since it uses less digits than its factorization.

550572100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9085 (or 9078 counting only the distinct ones).

The product of its (nonzero) digits is 1750, while the sum is 25.

The square root of 550572100 is about 23464.2728419186. The cubic root of 550572100 is about 819.6052531885.

The spelling of 550572100 in words is "five hundred fifty million, five hundred seventy-two thousand, one hundred".