143055481 has 2 divisors, whose sum is σ = 143055482. Its totient is φ = 143055480.

The previous prime is 143055461. The next prime is 143055487. The reversal of 143055481 is 184550341.

143055481 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 97614400 + 45441081 = 9880^2 + 6741^2 .

It is a cyclic number.

It is not a de Polignac number, because 143055481 - 2⁹ = 143054969 is a prime.

It is a super-2 number, since 2×143055481² = 40929741288282722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (143055487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71527740 + 71527741.

It is an arithmetic number, because the mean of its divisors is an integer number (71527741).

Almost surely, 2^143055481 is an apocalyptic number.

It is an amenable number.

143055481 is a deficient number, since it is larger than the sum of its proper divisors (1).

143055481 is an equidigital number, since it uses as much as digits as its factorization.

143055481 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9600, while the sum is 31.

The square root of 143055481 is about 11960.5802952867. The cubic root of 143055481 is about 522.9997733329. Note that the first 3 decimals are identical.

The spelling of 143055481 in words is "one hundred forty-three million, fifty-five thousand, four hundred eighty-one".