155650133 has 2 divisors, whose sum is σ = 155650134. Its totient is φ = 155650132.

The previous prime is 155650093. The next prime is 155650141. The reversal of 155650133 is 331056551.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 138815524 + 16834609 = 11782^2 + 4103^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-155650133 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 155650096 and 155650105.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (155650193) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77825066 + 77825067.

It is an arithmetic number, because the mean of its divisors is an integer number (77825067).

Almost surely, 2^155650133 is an apocalyptic number.

It is an amenable number.

155650133 is a deficient number, since it is larger than the sum of its proper divisors (1).

155650133 is an equidigital number, since it uses as much as digits as its factorization.

155650133 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6750, while the sum is 29.

The square root of 155650133 is about 12475.9822458995. The cubic root of 155650133 is about 537.9185222770.

The spelling of 155650133 in words is "one hundred fifty-five million, six hundred fifty thousand, one hundred thirty-three".