15138713 has 4 divisors (see below), whose sum is σ = 15178020. Its totient is φ = 15099408.

The previous prime is 15138707. The next prime is 15138719. The reversal of 15138713 is 31783151.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 31783151 = 271 ⋅117281.

It is an interprime number because it is at equal distance from previous prime (15138707) and next prime (15138719).

It can be written as a sum of positive squares in 2 ways, for example, as 2550409 + 12588304 = 1597^2 + 3548^2 .

It is a cyclic number.

It is not a de Polignac number, because 15138713 - 2⁸ = 15138457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15138719) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19070 + ... + 19847.

It is an arithmetic number, because the mean of its divisors is an integer number (3794505).

Almost surely, 2^15138713 is an apocalyptic number.

It is an amenable number.

15138713 is a deficient number, since it is larger than the sum of its proper divisors (39307).

15138713 is an equidigital number, since it uses as much as digits as its factorization.

15138713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39306.

The product of its digits is 2520, while the sum is 29.

The square root of 15138713 is about 3890.8499071540. The cubic root of 15138713 is about 247.3790886467.

It can be divided in two parts, 15138 and 713, that added together give a palindrome (15851).

The spelling of 15138713 in words is "fifteen million, one hundred thirty-eight thousand, seven hundred thirteen".