155153197 has 2 divisors, whose sum is σ = 155153198. Its totient is φ = 155153196.

The previous prime is 155153189. The next prime is 155153227. The reversal of 155153197 is 791351551.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 146748996 + 8404201 = 12114^2 + 2899^2 .

It is an emirp because it is prime and its reverse (791351551) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 155153197 - 2³ = 155153189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (155153137) 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, 77576598 + 77576599.

It is an arithmetic number, because the mean of its divisors is an integer number (77576599).

Almost surely, 2^155153197 is an apocalyptic number.

It is an amenable number.

155153197 is a deficient number, since it is larger than the sum of its proper divisors (1).

155153197 is an equidigital number, since it uses as much as digits as its factorization.

155153197 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23625, while the sum is 37.

The square root of 155153197 is about 12456.0506180731. The cubic root of 155153197 is about 537.3454505724.

The spelling of 155153197 in words is "one hundred fifty-five million, one hundred fifty-three thousand, one hundred ninety-seven".