118422257 has 2 divisors, whose sum is σ = 118422258. Its totient is φ = 118422256.

The previous prime is 118422211. The next prime is 118422277. The reversal of 118422257 is 752224811.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 117592336 + 829921 = 10844^2 + 911^2 .

It is a cyclic number.

It is not a de Polignac number, because 118422257 - 2¹² = 118418161 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (118422277) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 59211128 + 59211129.

It is an arithmetic number, because the mean of its divisors is an integer number (59211129).

Almost surely, 2^118422257 is an apocalyptic number.

It is an amenable number.

118422257 is a deficient number, since it is larger than the sum of its proper divisors (1).

118422257 is an equidigital number, since it uses as much as digits as its factorization.

118422257 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8960, while the sum is 32.

The square root of 118422257 is about 10882.1990884196. The cubic root of 118422257 is about 491.0711773734.

The spelling of 118422257 in words is "one hundred eighteen million, four hundred twenty-two thousand, two hundred fifty-seven".