122173559 has 2 divisors, whose sum is σ = 122173560. Its totient is φ = 122173558.

The previous prime is 122173547. The next prime is 122173609. The reversal of 122173559 is 955371221.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-122173559 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122173529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61086779 + 61086780.

It is an arithmetic number, because the mean of its divisors is an integer number (61086780).

Almost surely, 2^122173559 is an apocalyptic number.

122173559 is a deficient number, since it is larger than the sum of its proper divisors (1).

122173559 is an equidigital number, since it uses as much as digits as its factorization.

122173559 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18900, while the sum is 35.

The square root of 122173559 is about 11053.2148717014. The cubic root of 122173559 is about 496.2026452031.

The spelling of 122173559 in words is "one hundred twenty-two million, one hundred seventy-three thousand, five hundred fifty-nine".