173420453 has 2 divisors, whose sum is σ = 173420454. Its totient is φ = 173420452.

The previous prime is 173420407. The next prime is 173420501. The reversal of 173420453 is 354024371.

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., 165456769 + 7963684 = 12863^2 + 2822^2 .

It is a cyclic number.

It is not a de Polignac number, because 173420453 - 2⁸ = 173420197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (173422453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86710226 + 86710227.

It is an arithmetic number, because the mean of its divisors is an integer number (86710227).

Almost surely, 2^173420453 is an apocalyptic number.

It is an amenable number.

173420453 is a deficient number, since it is larger than the sum of its proper divisors (1).

173420453 is an equidigital number, since it uses as much as digits as its factorization.

173420453 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10080, while the sum is 29.

The square root of 173420453 is about 13168.9199633075. The cubic root of 173420453 is about 557.6565044199.

The spelling of 173420453 in words is "one hundred seventy-three million, four hundred twenty thousand, four hundred fifty-three".