155201369 has 2 divisors, whose sum is σ = 155201370. Its totient is φ = 155201368.

The previous prime is 155201357. The next prime is 155201377. The reversal of 155201369 is 963102551.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 135955600 + 19245769 = 11660^2 + 4387^2 .

It is a cyclic number.

It is not a de Polignac number, because 155201369 - 2²⁰ = 154152793 is a prime.

It is a super-2 number, since 2×155201369² = 48174929878948322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (155201339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77600684 + 77600685.

It is an arithmetic number, because the mean of its divisors is an integer number (77600685).

Almost surely, 2^155201369 is an apocalyptic number.

It is an amenable number.

155201369 is a deficient number, since it is larger than the sum of its proper divisors (1).

155201369 is an equidigital number, since it uses as much as digits as its factorization.

155201369 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8100, while the sum is 32.

The square root of 155201369 is about 12457.9841467229. The cubic root of 155201369 is about 537.4010565306.

The spelling of 155201369 in words is "one hundred fifty-five million, two hundred one thousand, three hundred sixty-nine".