109156573 has 2 divisors, whose sum is σ = 109156574. Its totient is φ = 109156572.

The previous prime is 109156477. The next prime is 109156589. The reversal of 109156573 is 375651901.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 103266244 + 5890329 = 10162^2 + 2427^2 .

It is an emirp because it is prime and its reverse (375651901) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-109156573 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (109159573) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54578286 + 54578287.

It is an arithmetic number, because the mean of its divisors is an integer number (54578287).

Almost surely, 2^109156573 is an apocalyptic number.

It is an amenable number.

109156573 is a deficient number, since it is larger than the sum of its proper divisors (1).

109156573 is an equidigital number, since it uses as much as digits as its factorization.

109156573 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 28350, while the sum is 37.

The square root of 109156573 is about 10447.8023047912. The cubic root of 109156573 is about 477.9142324364.

The spelling of 109156573 in words is "one hundred nine million, one hundred fifty-six thousand, five hundred seventy-three".