155189113 has 2 divisors, whose sum is σ = 155189114. Its totient is φ = 155189112.

The previous prime is 155189087. The next prime is 155189123. The reversal of 155189113 is 311981551.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 105740089 + 49449024 = 10283^2 + 7032^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-155189113 is a prime.

It is not a weakly prime, because it can be changed into another prime (155189123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77594556 + 77594557.

It is an arithmetic number, because the mean of its divisors is an integer number (77594557).

Almost surely, 2^155189113 is an apocalyptic number.

It is an amenable number.

155189113 is a deficient number, since it is larger than the sum of its proper divisors (1).

155189113 is an equidigital number, since it uses as much as digits as its factorization.

155189113 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5400, while the sum is 34.

The square root of 155189113 is about 12457.4922436259. The cubic root of 155189113 is about 537.3869102621.

The spelling of 155189113 in words is "one hundred fifty-five million, one hundred eighty-nine thousand, one hundred thirteen".