143561479 has 2 divisors, whose sum is σ = 143561480. Its totient is φ = 143561478.

The previous prime is 143561461. The next prime is 143561491. The reversal of 143561479 is 974165341.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 143561479 - 2²⁷ = 9343751 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (143561879) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71780739 + 71780740.

It is an arithmetic number, because the mean of its divisors is an integer number (71780740).

Almost surely, 2^143561479 is an apocalyptic number.

143561479 is a deficient number, since it is larger than the sum of its proper divisors (1).

143561479 is an equidigital number, since it uses as much as digits as its factorization.

143561479 is an evil number, because the sum of its binary digits is even.

The product of its digits is 90720, while the sum is 40.

The square root of 143561479 is about 11981.7143598068. The cubic root of 143561479 is about 523.6156775860.

The spelling of 143561479 in words is "one hundred forty-three million, five hundred sixty-one thousand, four hundred seventy-nine".