15140005 has 4 divisors (see below), whose sum is σ = 18168012. Its totient is φ = 12112000.

The previous prime is 15139987. The next prime is 15140011. The reversal of 15140005 is 50004151.

It is a happy number.

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 6880129 + 8259876 = 2623^2 + 2874^2 .

It is not a de Polignac number, because 15140005 - 2⁵ = 15139973 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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, 1513996 + ... + 1514005.

It is an arithmetic number, because the mean of its divisors is an integer number (4542003).

Almost surely, 2^15140005 is an apocalyptic number.

It is an amenable number.

15140005 is a deficient number, since it is larger than the sum of its proper divisors (3028007).

15140005 is an equidigital number, since it uses as much as digits as its factorization.

15140005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3028006.

The product of its (nonzero) digits is 100, while the sum is 16.

The square root of 15140005 is about 3891.0159341745. The cubic root of 15140005 is about 247.3861258960.

Adding to 15140005 its reverse (50004151), we get a palindrome (65144156).

The spelling of 15140005 in words is "fifteen million, one hundred forty thousand, five".