61443163 has 2 divisors, whose sum is σ = 61443164. Its totient is φ = 61443162.

The previous prime is 61443139. The next prime is 61443181. The reversal of 61443163 is 36134416.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 61443163 - 2²¹ = 59346011 is a prime.

It is not a weakly prime, because it can be changed into another prime (61443103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30721581 + 30721582.

It is an arithmetic number, because the mean of its divisors is an integer number (30721582).

Almost surely, 2^61443163 is an apocalyptic number.

61443163 is a deficient number, since it is larger than the sum of its proper divisors (1).

61443163 is an equidigital number, since it uses as much as digits as its factorization.

61443163 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5184, while the sum is 28.

The square root of 61443163 is about 7838.5689382693. The cubic root of 61443163 is about 394.6007031558.

Adding to 61443163 its reverse (36134416), we get a palindrome (97577579).

The spelling of 61443163 in words is "sixty-one million, four hundred forty-three thousand, one hundred sixty-three".