2187252 has 18 divisors (see below), whose sum is σ = 5528978. Its totient is φ = 729072.

The previous prime is 2187247. The next prime is 2187259. The reversal of 2187252 is 2527812.

It can be written as a sum of positive squares in only one way, i.e., 1920996 + 266256 = 1386^2 + 516^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is an Ulam number.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2187259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 30343 + ... + 30414.

2^2187252 is an apocalyptic number.

It is an amenable number.

2187252 is an abundant number, since it is smaller than the sum of its proper divisors (3341726).

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

2187252 is a wasteful number, since it uses less digits than its factorization.

2187252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60767 (or 60762 counting only the distinct ones).

The product of its digits is 2240, while the sum is 27.

The square root of 2187252 is about 1478.9361040965. The cubic root of 2187252 is about 129.8074466903.

The spelling of 2187252 in words is "two million, one hundred eighty-seven thousand, two hundred fifty-two".