2331556 has 12 divisors (see below), whose sum is σ = 4257792. Its totient is φ = 1115048.

The previous prime is 2331463. The next prime is 2331557. The reversal of 2331556 is 6551332.

It is a happy number.

It is a super-2 number, since 2×2331556² = 10872306762272, which contains 22 as substring.

It is a plaindrome in base 14.

It is a self number, because there is not a number n which added to its sum of digits gives 2331556.

It is not an unprimeable number, because it can be changed into a prime (2331557) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12580 + ... + 12763.

It is an arithmetic number, because the mean of its divisors is an integer number (354816).

2^2331556 is an apocalyptic number.

It is an amenable number.

2331556 is a deficient number, since it is larger than the sum of its proper divisors (1926236).

2331556 is a wasteful number, since it uses less digits than its factorization.

2331556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25370 (or 25368 counting only the distinct ones).

The product of its digits is 2700, while the sum is 25.

The square root of 2331556 is about 1526.9433519289. The cubic root of 2331556 is about 132.6015549898.

Adding to 2331556 its reverse (6551332), we get a palindrome (8882888).

The spelling of 2331556 in words is "two million, three hundred thirty-one thousand, five hundred fifty-six".