15452245 has 4 divisors (see below), whose sum is σ = 18542700. Its totient is φ = 12361792.

The previous prime is 15452243. The next prime is 15452267. The reversal of 15452245 is 54225451.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2427364 + 13024881 = 1558^2 + 3609^2 .

It is a cyclic number.

It is not a de Polignac number, because 15452245 - 2¹ = 15452243 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15452243) 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 3 ways as a sum of consecutive naturals, for example, 1545220 + ... + 1545229.

It is an arithmetic number, because the mean of its divisors is an integer number (4635675).

Almost surely, 2^15452245 is an apocalyptic number.

It is an amenable number.

15452245 is a deficient number, since it is larger than the sum of its proper divisors (3090455).

15452245 is an equidigital number, since it uses as much as digits as its factorization.

15452245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3090454.

The product of its digits is 8000, while the sum is 28.

The square root of 15452245 is about 3930.9343672974. The cubic root of 15452245 is about 249.0752233708.

Adding to 15452245 its reverse (54225451), we get a palindrome (69677696).

The spelling of 15452245 in words is "fifteen million, four hundred fifty-two thousand, two hundred forty-five".