15380143 has 2 divisors, whose sum is σ = 15380144. Its totient is φ = 15380142.

The previous prime is 15380137. The next prime is 15380147. The reversal of 15380143 is 34108351.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 15380143 - 2¹⁷ = 15249071 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15380147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7690071 + 7690072.

It is an arithmetic number, because the mean of its divisors is an integer number (7690072).

Almost surely, 2^15380143 is an apocalyptic number.

15380143 is a deficient number, since it is larger than the sum of its proper divisors (1).

15380143 is an equidigital number, since it uses as much as digits as its factorization.

15380143 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 15380143 is about 3921.7525419129. The cubic root of 15380143 is about 248.6872144428.

Adding to 15380143 its reverse (34108351), we get a palindrome (49488494).

The spelling of 15380143 in words is "fifteen million, three hundred eighty thousand, one hundred forty-three".