143961497 has 2 divisors, whose sum is σ = 143961498. Its totient is φ = 143961496.

The previous prime is 143961479. The next prime is 143961511. The reversal of 143961497 is 794169341.

Together with previous prime (143961479) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 138744841 + 5216656 = 11779^2 + 2284^2 .

It is a cyclic number.

It is not a de Polignac number, because 143961497 - 2²² = 139767193 is a prime.

It is not a weakly prime, because it can be changed into another prime (143961407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71980748 + 71980749.

It is an arithmetic number, because the mean of its divisors is an integer number (71980749).

Almost surely, 2^143961497 is an apocalyptic number.

It is an amenable number.

143961497 is a deficient number, since it is larger than the sum of its proper divisors (1).

143961497 is an equidigital number, since it uses as much as digits as its factorization.

143961497 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 163296, while the sum is 44.

The square root of 143961497 is about 11998.3956010793. The cubic root of 143961497 is about 524.1015587488.

The spelling of 143961497 in words is "one hundred forty-three million, nine hundred sixty-one thousand, four hundred ninety-seven".