2187572 has 6 divisors (see below), whose sum is σ = 3828258. Its totient is φ = 1093784.

The previous prime is 2187571. The next prime is 2187583. The reversal of 2187572 is 2757812.

It can be written as a sum of positive squares in only one way, i.e., 2149156 + 38416 = 1466^2 + 196^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2187571) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 273443 + ... + 273450.

It is an arithmetic number, because the mean of its divisors is an integer number (638043).

2^2187572 is an apocalyptic number.

It is an amenable number.

2187572 is a deficient number, since it is larger than the sum of its proper divisors (1640686).

2187572 is a wasteful number, since it uses less digits than its factorization.

2187572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 546897 (or 546895 counting only the distinct ones).

The product of its digits is 7840, while the sum is 32.

The square root of 2187572 is about 1479.0442860172. The cubic root of 2187572 is about 129.8137767576.

The spelling of 2187572 in words is "two million, one hundred eighty-seven thousand, five hundred seventy-two".