143455493 has 2 divisors, whose sum is σ = 143455494. Its totient is φ = 143455492.

The previous prime is 143455483. The next prime is 143455513. The reversal of 143455493 is 394554341.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 105534529 + 37920964 = 10273^2 + 6158^2 .

It is a cyclic number.

It is not a de Polignac number, because 143455493 - 2⁸ = 143455237 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (143455463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71727746 + 71727747.

It is an arithmetic number, because the mean of its divisors is an integer number (71727747).

Almost surely, 2^143455493 is an apocalyptic number.

It is an amenable number.

143455493 is a deficient number, since it is larger than the sum of its proper divisors (1).

143455493 is an equidigital number, since it uses as much as digits as its factorization.

143455493 is an evil number, because the sum of its binary digits is even.

The product of its digits is 129600, while the sum is 38.

The square root of 143455493 is about 11977.2907203591. The cubic root of 143455493 is about 523.4867906588.

The spelling of 143455493 in words is "one hundred forty-three million, four hundred fifty-five thousand, four hundred ninety-three".