173421433 has 2 divisors, whose sum is σ = 173421434. Its totient is φ = 173421432.

The previous prime is 173421419. The next prime is 173421461. The reversal of 173421433 is 334124371.

It is an a-pointer prime, because the next prime (173421461) can be obtained adding 173421433 to its sum of digits (28).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 145033849 + 28387584 = 12043^2 + 5328^2 .

It is a cyclic number.

It is not a de Polignac number, because 173421433 - 2¹³ = 173413241 is a prime.

It is not a weakly prime, because it can be changed into another prime (173425433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86710716 + 86710717.

It is an arithmetic number, because the mean of its divisors is an integer number (86710717).

Almost surely, 2^173421433 is an apocalyptic number.

It is an amenable number.

173421433 is a deficient number, since it is larger than the sum of its proper divisors (1).

173421433 is an equidigital number, since it uses as much as digits as its factorization.

173421433 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6048, while the sum is 28.

The square root of 173421433 is about 13168.9571720771. The cubic root of 173421433 is about 557.6575548580.

The spelling of 173421433 in words is "one hundred seventy-three million, four hundred twenty-one thousand, four hundred thirty-three".