155155433 has 8 divisors (see below), whose sum is σ = 158344200. Its totient is φ = 151976448.

The previous prime is 155155421. The next prime is 155155453. The reversal of 155155433 is 334551551.

It can be written as a sum of positive squares in 4 ways, for example, as 16104169 + 139051264 = 4013^2 + 11792^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 155155433 - 2⁸ = 155155177 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 155155433.

It is not an unprimeable number, because it can be changed into a prime (155155453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35513 + ... + 39641.

It is an arithmetic number, because the mean of its divisors is an integer number (19793025).

Almost surely, 2^155155433 is an apocalyptic number.

It is an amenable number.

155155433 is a deficient number, since it is larger than the sum of its proper divisors (3188767).

155155433 is an equidigital number, since it uses as much as digits as its factorization.

155155433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4891.

The product of its digits is 22500, while the sum is 32.

The square root of 155155433 is about 12456.1403733259. The cubic root of 155155433 is about 537.3480318892.

The spelling of 155155433 in words is "one hundred fifty-five million, one hundred fifty-five thousand, four hundred thirty-three".