2231572 has 12 divisors (see below), whose sum is σ = 4463200. Its totient is φ = 956376.

The previous prime is 2231533. The next prime is 2231587. The reversal of 2231572 is 2751322.

2231572 is an admirable number.

It is a super-3 number, since 3×2231572³ = 33339107197516983744, which contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39822 + ... + 39877.

2^2231572 is an apocalyptic number.

It is an amenable number.

2231572 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

2231572 is a wasteful number, since it uses less digits than its factorization.

2231572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79710 (or 79708 counting only the distinct ones).

The product of its digits is 840, while the sum is 22.

The square root of 2231572 is about 1493.8447041108. The cubic root of 2231572 is about 130.6783476762.

Adding to 2231572 its reverse (2751322), we get a palindrome (4982894).

The spelling of 2231572 in words is "two million, two hundred thirty-one thousand, five hundred seventy-two".