143227457 has 2 divisors, whose sum is σ = 143227458. Its totient is φ = 143227456.

The previous prime is 143227439. The next prime is 143227477. The reversal of 143227457 is 754722341.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 111429136 + 31798321 = 10556^2 + 5639^2 .

It is an emirp because it is prime and its reverse (754722341) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 143227457 - 2¹⁸ = 142965313 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (143227477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71613728 + 71613729.

It is an arithmetic number, because the mean of its divisors is an integer number (71613729).

Almost surely, 2^143227457 is an apocalyptic number.

It is an amenable number.

143227457 is a deficient number, since it is larger than the sum of its proper divisors (1).

143227457 is an equidigital number, since it uses as much as digits as its factorization.

143227457 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 47040, while the sum is 35.

The square root of 143227457 is about 11967.7674191973. The cubic root of 143227457 is about 523.2092663916.

Adding to 143227457 its reverse (754722341), we get a palindrome (897949798).

The spelling of 143227457 in words is "one hundred forty-three million, two hundred twenty-seven thousand, four hundred fifty-seven".