1545143 has 2 divisors, whose sum is σ = 1545144. Its totient is φ = 1545142.

The previous prime is 1545139. The next prime is 1545169. The reversal of 1545143 is 3415451.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1545143 - 2² = 1545139 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 (1545043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 772571 + 772572.

It is an arithmetic number, because the mean of its divisors is an integer number (772572).

2^1545143 is an apocalyptic number.

1545143 is a deficient number, since it is larger than the sum of its proper divisors (1).

1545143 is an equidigital number, since it uses as much as digits as its factorization.

1545143 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1200, while the sum is 23.

The square root of 1545143 is about 1243.0378111707. The cubic root of 1545143 is about 115.6084449636.

The spelling of 1545143 in words is "one million, five hundred forty-five thousand, one hundred forty-three".