172432937 has 2 divisors, whose sum is σ = 172432938. Its totient is φ = 172432936.

The previous prime is 172432933. The next prime is 172432951. The reversal of 172432937 is 739234271.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 125865961 + 46566976 = 11219^2 + 6824^2 .

It is a cyclic number.

It is not a de Polignac number, because 172432937 - 2² = 172432933 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 172432937.

It is not a weakly prime, because it can be changed into another prime (172432933) 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, 86216468 + 86216469.

It is an arithmetic number, because the mean of its divisors is an integer number (86216469).

Almost surely, 2^172432937 is an apocalyptic number.

It is an amenable number.

172432937 is a deficient number, since it is larger than the sum of its proper divisors (1).

172432937 is an equidigital number, since it uses as much as digits as its factorization.

172432937 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 63504, while the sum is 38.

The square root of 172432937 is about 13131.3722436004. The cubic root of 172432937 is about 556.5959925974.

The spelling of 172432937 in words is "one hundred seventy-two million, four hundred thirty-two thousand, nine hundred thirty-seven".