2153345 has 8 divisors (see below), whose sum is σ = 2595240. Its totient is φ = 1715200.

The previous prime is 2153341. The next prime is 2153351. The reversal of 2153345 is 5433512.

It can be written as a sum of positive squares in 4 ways, for example, as 368449 + 1784896 = 607^2 + 1336^2 .

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

It is not a de Polignac number, because 2153345 - 2² = 2153341 is a prime.

It is a d-powerful number, because it can be written as 2 + 1 + 5³ + 3⁸ + 3¹¹ + 4⁷ + 5⁹ .

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2153345.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2153341) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 545 + ... + 2145.

It is an arithmetic number, because the mean of its divisors is an integer number (324405).

2^2153345 is an apocalyptic number.

It is an amenable number.

2153345 is a deficient number, since it is larger than the sum of its proper divisors (441895).

2153345 is a wasteful number, since it uses less digits than its factorization.

2153345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1875.

The product of its digits is 1800, while the sum is 23.

The square root of 2153345 is about 1467.4280220849. The cubic root of 2153345 is about 129.1331877622.

Adding to 2153345 its reverse (5433512), we get a palindrome (7586857).

The spelling of 2153345 in words is "two million, one hundred fifty-three thousand, three hundred forty-five".