15243345 has 48 divisors (see below), whose sum is σ = 28933632. Its totient is φ = 7378560.

The previous prime is 15243343. The next prime is 15243359. The reversal of 15243345 is 54334251.

It is not a de Polignac number, because 15243345 - 2¹ = 15243343 is a prime.

It is not an unprimeable number, because it can be changed into a prime (15243343) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 41352 + ... + 41718.

It is an arithmetic number, because the mean of its divisors is an integer number (602784).

Almost surely, 2^15243345 is an apocalyptic number.

15243345 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

15243345 is a deficient number, since it is larger than the sum of its proper divisors (13690287).

15243345 is a wasteful number, since it uses less digits than its factorization.

15243345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 462 (or 459 counting only the distinct ones).

The product of its digits is 7200, while the sum is 27.

The square root of 15243345 is about 3904.2726595360. The cubic root of 15243345 is about 247.9477051112.

Adding to 15243345 its reverse (54334251), we get a palindrome (69577596).

The spelling of 15243345 in words is "fifteen million, two hundred forty-three thousand, three hundred forty-five".