15243797 has 4 divisors (see below), whose sum is σ = 15256800. Its totient is φ = 15230796.

The previous prime is 15243793. The next prime is 15243799. The reversal of 15243797 is 79734251.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 15243797 - 2² = 15243793 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 15243797.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15243793) 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 3 ways as a sum of consecutive naturals, for example, 4547 + ... + 7152.

It is an arithmetic number, because the mean of its divisors is an integer number (3814200).

Almost surely, 2^15243797 is an apocalyptic number.

It is an amenable number.

15243797 is a deficient number, since it is larger than the sum of its proper divisors (13003).

15243797 is a wasteful number, since it uses less digits than its factorization.

15243797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13002.

The product of its digits is 52920, while the sum is 38.

The square root of 15243797 is about 3904.3305444083. The cubic root of 15243797 is about 247.9501558256.

The spelling of 15243797 in words is "fifteen million, two hundred forty-three thousand, seven hundred ninety-seven".