63172943 has 2 divisors, whose sum is σ = 63172944. Its totient is φ = 63172942.

The previous prime is 63172931. The next prime is 63172951. The reversal of 63172943 is 34927136.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 63172943 - 2⁸ = 63172687 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63171943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31586471 + 31586472.

It is an arithmetic number, because the mean of its divisors is an integer number (31586472).

Almost surely, 2^63172943 is an apocalyptic number.

63172943 is a deficient number, since it is larger than the sum of its proper divisors (1).

63172943 is an equidigital number, since it uses as much as digits as its factorization.

63172943 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27216, while the sum is 35.

The square root of 63172943 is about 7948.1408517967. The cubic root of 63172943 is about 398.2694887065.

The spelling of 63172943 in words is "sixty-three million, one hundred seventy-two thousand, nine hundred forty-three".