155703161 has 2 divisors, whose sum is σ = 155703162. Its totient is φ = 155703160.

The previous prime is 155703137. The next prime is 155703167. The reversal of 155703161 is 161307551.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 126337600 + 29365561 = 11240^2 + 5419^2 .

It is a cyclic number.

It is not a de Polignac number, because 155703161 - 2¹⁰ = 155702137 is a prime.

It is not a weakly prime, because it can be changed into another prime (155703167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77851580 + 77851581.

It is an arithmetic number, because the mean of its divisors is an integer number (77851581).

Almost surely, 2^155703161 is an apocalyptic number.

It is an amenable number.

155703161 is a deficient number, since it is larger than the sum of its proper divisors (1).

155703161 is an equidigital number, since it uses as much as digits as its factorization.

155703161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3150, while the sum is 29.

The square root of 155703161 is about 12478.1072683320. The cubic root of 155703161 is about 537.9796026503.

The spelling of 155703161 in words is "one hundred fifty-five million, seven hundred three thousand, one hundred sixty-one".