118565401 has 2 divisors, whose sum is σ = 118565402. Its totient is φ = 118565400.

The previous prime is 118565383. The next prime is 118565423. The reversal of 118565401 is 104565811.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 110271001 + 8294400 = 10501^2 + 2880^2 .

It is a cyclic number.

It is not a de Polignac number, because 118565401 - 2¹¹ = 118563353 is a prime.

It is not a weakly prime, because it can be changed into another prime (118565431) 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, 59282700 + 59282701.

It is an arithmetic number, because the mean of its divisors is an integer number (59282701).

Almost surely, 2^118565401 is an apocalyptic number.

It is an amenable number.

118565401 is a deficient number, since it is larger than the sum of its proper divisors (1).

118565401 is an equidigital number, since it uses as much as digits as its factorization.

118565401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4800, while the sum is 31.

The square root of 118565401 is about 10888.7740815943. The cubic root of 118565401 is about 491.2689599823.

The spelling of 118565401 in words is "one hundred eighteen million, five hundred sixty-five thousand, four hundred one".