153555161 has 2 divisors, whose sum is σ = 153555162. Its totient is φ = 153555160.

The previous prime is 153555139. The next prime is 153555163. The reversal of 153555161 is 161555351.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 145057936 + 8497225 = 12044^2 + 2915^2 .

It is a cyclic number.

It is not a de Polignac number, because 153555161 - 2⁶ = 153555097 is a prime.

Together with 153555163, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (153555163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 76777580 + 76777581.

It is an arithmetic number, because the mean of its divisors is an integer number (76777581).

Almost surely, 2^153555161 is an apocalyptic number.

It is an amenable number.

153555161 is a deficient number, since it is larger than the sum of its proper divisors (1).

153555161 is an equidigital number, since it uses as much as digits as its factorization.

153555161 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11250, while the sum is 32.

The square root of 153555161 is about 12391.7376101982. The cubic root of 153555161 is about 535.4942426606.

The spelling of 153555161 in words is "one hundred fifty-three million, five hundred fifty-five thousand, one hundred sixty-one".