172434433 has 2 divisors, whose sum is σ = 172434434. Its totient is φ = 172434432.

The previous prime is 172434419. The next prime is 172434469. The reversal of 172434433 is 334434271.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 169312144 + 3122289 = 13012^2 + 1767^2 .

It is an emirp because it is prime and its reverse (334434271) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-172434433 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 172434395 and 172434404.

It is not a weakly prime, because it can be changed into another prime (172434413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86217216 + 86217217.

It is an arithmetic number, because the mean of its divisors is an integer number (86217217).

Almost surely, 2^172434433 is an apocalyptic number.

It is an amenable number.

172434433 is a deficient number, since it is larger than the sum of its proper divisors (1).

172434433 is an equidigital number, since it uses as much as digits as its factorization.

172434433 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24192, while the sum is 31.

The square root of 172434433 is about 13131.4292062974. The cubic root of 172434433 is about 556.5976022380.

The spelling of 172434433 in words is "one hundred seventy-two million, four hundred thirty-four thousand, four hundred thirty-three".