155235433 has 2 divisors, whose sum is σ = 155235434. Its totient is φ = 155235432.

The previous prime is 155235413. The next prime is 155235439. The reversal of 155235433 is 334532551.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 93644329 + 61591104 = 9677^2 + 7848^2 .

It is a cyclic number.

It is not a de Polignac number, because 155235433 - 2⁵ = 155235401 is a prime.

It is equal to p_8722039 and since 155235433 and 8722039 have the same sum of digits, it is a Honaker prime.

It is a junction number, because it is equal to n+sod(n) for n = 155235395 and 155235404.

It is not a weakly prime, because it can be changed into another prime (155235439) 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, 77617716 + 77617717.

It is an arithmetic number, because the mean of its divisors is an integer number (77617717).

Almost surely, 2^155235433 is an apocalyptic number.

It is an amenable number.

155235433 is a deficient number, since it is larger than the sum of its proper divisors (1).

155235433 is an equidigital number, since it uses as much as digits as its factorization.

155235433 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27000, while the sum is 31.

The square root of 155235433 is about 12459.3512270904. The cubic root of 155235433 is about 537.4403703816.

Adding to 155235433 its reverse (334532551), we get a palindrome (489767984).

The spelling of 155235433 in words is "one hundred fifty-five million, two hundred thirty-five thousand, four hundred thirty-three".