915143 has 2 divisors, whose sum is σ = 915144. Its totient is φ = 915142.

The previous prime is 915139. The next prime is 915157. The reversal of 915143 is 341519.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 915143 - 2² = 915139 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (915113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 457571 + 457572.

It is an arithmetic number, because the mean of its divisors is an integer number (457572).

2⁹¹⁵¹⁴³ is an apocalyptic number.

915143 is a deficient number, since it is larger than the sum of its proper divisors (1).

915143 is an equidigital number, since it uses as much as digits as its factorization.

915143 is an evil number, because the sum of its binary digits is even.

The product of its digits is 540, while the sum is 23.

The square root of 915143 is about 956.6310678626. The cubic root of 915143 is about 97.0874260505.

The spelling of 915143 in words is "nine hundred fifteen thousand, one hundred forty-three".