15138701 has 4 divisors (see below), whose sum is σ = 15153372. Its totient is φ = 15124032.

The previous prime is 15138689. The next prime is 15138707. The reversal of 15138701 is 10783151.

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 5522500 + 9616201 = 2350^2 + 3101^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15138701 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15138707) 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, 5660 + ... + 7893.

It is an arithmetic number, because the mean of its divisors is an integer number (3788343).

Almost surely, 2^15138701 is an apocalyptic number.

It is an amenable number.

15138701 is a deficient number, since it is larger than the sum of its proper divisors (14671).

15138701 is a wasteful number, since it uses less digits than its factorization.

15138701 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14670.

The product of its (nonzero) digits is 840, while the sum is 26.

The square root of 15138701 is about 3890.8483650741. The cubic root of 15138701 is about 247.3790232834.

The spelling of 15138701 in words is "fifteen million, one hundred thirty-eight thousand, seven hundred one".