2321145 has 12 divisors (see below), whose sum is σ = 4023396. Its totient is φ = 1237920.

The previous prime is 2321117. The next prime is 2321147. The reversal of 2321145 is 5411232.

It can be written as a sum of positive squares in 2 ways, for example, as 281961 + 2039184 = 531^2 + 1428^2 .

It is not a de Polignac number, because 2321145 - 2⁷ = 2321017 is a prime.

It is a super-2 number, since 2×2321145² = 10775428222050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2321147) 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 11 ways as a sum of consecutive naturals, for example, 25746 + ... + 25835.

It is an arithmetic number, because the mean of its divisors is an integer number (335283).

2^2321145 is an apocalyptic number.

It is an amenable number.

2321145 is a deficient number, since it is larger than the sum of its proper divisors (1702251).

2321145 is a wasteful number, since it uses less digits than its factorization.

2321145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51592 (or 51589 counting only the distinct ones).

The product of its digits is 240, while the sum is 18.

The square root of 2321145 is about 1523.5304394727. The cubic root of 2321145 is about 132.4038937589.

Adding to 2321145 its reverse (5411232), we get a palindrome (7732377).

The spelling of 2321145 in words is "two million, three hundred twenty-one thousand, one hundred forty-five".