2233172500 has 60 divisors (see below), whose sum is σ = 5259232132. Its totient is φ = 824544000.

The previous prime is 2233172483. The next prime is 2233172503. The reversal of 2233172500 is 52713322.

It can be written as a sum of positive squares in 10 ways, for example, as 2088307204 + 144865296 = 45698^2 + 12036^2 .

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2233172503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1857 + ... + 66856.

Almost surely, 2^2233172500 is an apocalyptic number.

2233172500 is a gapful number since it is divisible by the number (20) 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 2233172500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2629616066).

2233172500 is an abundant number, since it is smaller than the sum of its proper divisors (3026059632).

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

2233172500 is a wasteful number, since it uses less digits than its factorization.

2233172500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68750 (or 68733 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 25.

The square root of 2233172500 is about 47256.4545855907. The cubic root of 2233172500 is about 1307.0958137062.

Adding to 2233172500 its reverse (52713322), we get a palindrome (2285885822).

The spelling of 2233172500 in words is "two billion, two hundred thirty-three million, one hundred seventy-two thousand, five hundred".