2144545 has 8 divisors (see below), whose sum is σ = 2771496. Its totient is φ = 1583616.

The previous prime is 2144537. The next prime is 2144551. The reversal of 2144545 is 5454412.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 44944 + 2099601 = 212^2 + 1449^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2144545 - 2³ = 2144537 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16432 + ... + 16561.

It is an arithmetic number, because the mean of its divisors is an integer number (346437).

2^2144545 is an apocalyptic number.

It is an amenable number.

2144545 is a deficient number, since it is larger than the sum of its proper divisors (626951).

2144545 is a wasteful number, since it uses less digits than its factorization.

2144545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33011.

The product of its digits is 3200, while the sum is 25.

The square root of 2144545 is about 1464.4265089106. The cubic root of 2144545 is about 128.9570395576.

Adding to 2144545 its reverse (5454412), we get a palindrome (7598957).

The spelling of 2144545 in words is "two million, one hundred forty-four thousand, five hundred forty-five".