2722500 has 135 divisors (see below), whose sum is σ = 9452443. Its totient is φ = 660000.

The previous prime is 2722477. The next prime is 2722507. The reversal of 2722500 is 52272.

It is a happy number.

The square root of 2722500 is 1650.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 2 ways, for example, as 213444 + 2509056 = 462^2 + 1584^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a zygodrome in base 5.

It is not an unprimeable number, because it can be changed into a prime (2722507) by changing a digit.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 247495 + ... + 247505.

2^2722500 is an apocalyptic number.

2722500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

2722500 is the 1650-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2722500

2722500 is an abundant number, since it is smaller than the sum of its proper divisors (6729943).

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

2722500 is a wasteful number, since it uses less digits than its factorization.

2722500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52 (or 21 counting only the distinct ones).

The product of its (nonzero) digits is 280, while the sum is 18.

The cubic root of 2722500 is about 139.6333945828.

Adding to 2722500 its reverse (52272), we get a palindrome (2774772).

It can be divided in two parts, 272 and 2500, that added together give a palindrome (2772).

The spelling of 2722500 in words is "two million, seven hundred twenty-two thousand, five hundred".