4521245 has 8 divisors (see below), whose sum is σ = 5612760. Its totient is φ = 3492160.

The previous prime is 4521241. The next prime is 4521299. The reversal of 4521245 is 5421254.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1369 + 4519876 = 37^2 + 2126^2 .

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

It is not a de Polignac number, because 4521245 - 2² = 4521241 is a prime.

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 4521245.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4521241) 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 7 ways as a sum of consecutive naturals, for example, 15446 + ... + 15735.

It is an arithmetic number, because the mean of its divisors is an integer number (701595).

Almost surely, 2^4521245 is an apocalyptic number.

It is an amenable number.

4521245 is a deficient number, since it is larger than the sum of its proper divisors (1091515).

4521245 is a wasteful number, since it uses less digits than its factorization.

4521245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31215.

The product of its digits is 1600, while the sum is 23.

The square root of 4521245 is about 2126.3219417576. The cubic root of 4521245 is about 165.3557674025.

Adding to 4521245 its reverse (5421254), we get a palindrome (9942499).

Subtracting 4521245 from its reverse (5421254), we obtain a palindrome (900009).

The spelling of 4521245 in words is "four million, five hundred twenty-one thousand, two hundred forty-five".