118215061 has 2 divisors, whose sum is σ = 118215062. Its totient is φ = 118215060.

The previous prime is 118214989. The next prime is 118215077. The reversal of 118215061 is 160512811.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 97911025 + 20304036 = 9895^2 + 4506^2 .

It is an emirp because it is prime and its reverse (160512811) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-118215061 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (118215091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 59107530 + 59107531.

It is an arithmetic number, because the mean of its divisors is an integer number (59107531).

Almost surely, 2^118215061 is an apocalyptic number.

It is an amenable number.

118215061 is a deficient number, since it is larger than the sum of its proper divisors (1).

118215061 is an equidigital number, since it uses as much as digits as its factorization.

118215061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 480, while the sum is 25.

The square root of 118215061 is about 10872.6749698499. The cubic root of 118215061 is about 490.7846113605.

Adding to 118215061 its reverse (160512811), we get a palindrome (278727872).

The spelling of 118215061 in words is "one hundred eighteen million, two hundred fifteen thousand, sixty-one".