161535151 has 2 divisors, whose sum is σ = 161535152. Its totient is φ = 161535150.

The previous prime is 161535107. The next prime is 161535161. The reversal of 161535151 is 151535161.

161535151 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-161535151 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (161535161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80767575 + 80767576.

It is an arithmetic number, because the mean of its divisors is an integer number (80767576).

Almost surely, 2^161535151 is an apocalyptic number.

161535151 is a deficient number, since it is larger than the sum of its proper divisors (1).

161535151 is an equidigital number, since it uses as much as digits as its factorization.

161535151 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2250, while the sum is 28.

The square root of 161535151 is about 12709.6479494910. The cubic root of 161535151 is about 544.6142667964.

The spelling of 161535151 in words is "one hundred sixty-one million, five hundred thirty-five thousand, one hundred fifty-one".