173213533 has 2 divisors, whose sum is σ = 173213534. Its totient is φ = 173213532.

The previous prime is 173213501. The next prime is 173213563. The reversal of 173213533 is 335312371.

173213533 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 151339204 + 21874329 = 12302^2 + 4677^2 .

It is a cyclic number.

It is not a de Polignac number, because 173213533 - 2⁵ = 173213501 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (173213563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86606766 + 86606767.

It is an arithmetic number, because the mean of its divisors is an integer number (86606767).

Almost surely, 2^173213533 is an apocalyptic number.

It is an amenable number.

173213533 is a deficient number, since it is larger than the sum of its proper divisors (1).

173213533 is an equidigital number, since it uses as much as digits as its factorization.

173213533 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5670, while the sum is 28.

The square root of 173213533 is about 13161.0612414045. The cubic root of 173213533 is about 557.4346232332.

The spelling of 173213533 in words is "one hundred seventy-three million, two hundred thirteen thousand, five hundred thirty-three".