2152245 has 8 divisors (see below), whose sum is σ = 3443616. Its totient is φ = 1147856.

The previous prime is 2152231. The next prime is 2152247. The reversal of 2152245 is 5422512.

It is a happy number.

2152245 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 2152245 - 2⁴ = 2152229 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2152247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71727 + ... + 71756.

It is an arithmetic number, because the mean of its divisors is an integer number (430452).

2^2152245 is an apocalyptic number.

It is an amenable number.

2152245 is a deficient number, since it is larger than the sum of its proper divisors (1291371).

2152245 is a wasteful number, since it uses less digits than its factorization.

2152245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143491.

The product of its digits is 800, while the sum is 21.

The square root of 2152245 is about 1467.0531687706. The cubic root of 2152245 is about 129.1111955128. Note that the first 4 decimals are identical.

Adding to 2152245 its reverse (5422512), we get a palindrome (7574757).

The spelling of 2152245 in words is "two million, one hundred fifty-two thousand, two hundred forty-five".