172424503 has 2 divisors, whose sum is σ = 172424504. Its totient is φ = 172424502.

The previous prime is 172424479. The next prime is 172424509. The reversal of 172424503 is 305424271.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 172424503 - 2⁹ = 172423991 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (172424509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86212251 + 86212252.

It is an arithmetic number, because the mean of its divisors is an integer number (86212252).

Almost surely, 2^172424503 is an apocalyptic number.

172424503 is a deficient number, since it is larger than the sum of its proper divisors (1).

172424503 is an equidigital number, since it uses as much as digits as its factorization.

172424503 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6720, while the sum is 28.

The square root of 172424503 is about 13131.0511003499. The cubic root of 172424503 is about 556.5869177512.

Adding to 172424503 its reverse (305424271), we get a palindrome (477848774).

The spelling of 172424503 in words is "one hundred seventy-two million, four hundred twenty-four thousand, five hundred three".