913573 has 2 divisors, whose sum is σ = 913574. Its totient is φ = 913572.

The previous prime is 913571. The next prime is 913579. The reversal of 913573 is 375319.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 580644 + 332929 = 762^2 + 577^2 .

It is a cyclic number.

It is not a de Polignac number, because 913573 - 2¹ = 913571 is a prime.

Together with 913571, it forms a pair of twin primes.

It is an Ulam number.

913573 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (913571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 456786 + 456787.

It is an arithmetic number, because the mean of its divisors is an integer number (456787).

2⁹¹³⁵⁷³ is an apocalyptic number.

It is an amenable number.

913573 is a deficient number, since it is larger than the sum of its proper divisors (1).

913573 is an equidigital number, since it uses as much as digits as its factorization.

913573 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2835, while the sum is 28.

The square root of 913573 is about 955.8101275881. The cubic root of 913573 is about 97.0318738912.

The spelling of 913573 in words is "nine hundred thirteen thousand, five hundred seventy-three".