118171541 has 2 divisors, whose sum is σ = 118171542. Its totient is φ = 118171540.

The previous prime is 118171531. The next prime is 118171567. The reversal of 118171541 is 145171811.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 118156900 + 14641 = 10870^2 + 121^2 .

It is a cyclic number.

It is not a de Polignac number, because 118171541 - 2¹⁰ = 118170517 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (118171531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 59085770 + 59085771.

It is an arithmetic number, because the mean of its divisors is an integer number (59085771).

Almost surely, 2^118171541 is an apocalyptic number.

It is an amenable number.

118171541 is a deficient number, since it is larger than the sum of its proper divisors (1).

118171541 is an equidigital number, since it uses as much as digits as its factorization.

118171541 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1120, while the sum is 29.

The square root of 118171541 is about 10870.6734382006. The cubic root of 118171541 is about 490.7243777273.

The spelling of 118171541 in words is "one hundred eighteen million, one hundred seventy-one thousand, five hundred forty-one".