155041331 has 2 divisors, whose sum is σ = 155041332. Its totient is φ = 155041330.

The previous prime is 155041319. The next prime is 155041333. The reversal of 155041331 is 133140551.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 155041331 - 2²² = 150847027 is a prime.

It is a super-2 number, since 2×155041331² = 48075628636503122, which contains 22 as substring.

Together with 155041333, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 155041297 and 155041306.

It is not a weakly prime, because it can be changed into another prime (155041333) 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, 77520665 + 77520666.

It is an arithmetic number, because the mean of its divisors is an integer number (77520666).

Almost surely, 2^155041331 is an apocalyptic number.

155041331 is a deficient number, since it is larger than the sum of its proper divisors (1).

155041331 is an equidigital number, since it uses as much as digits as its factorization.

155041331 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 900, while the sum is 23.

The square root of 155041331 is about 12451.5593802543. The cubic root of 155041331 is about 537.2162768701.

Adding to 155041331 its reverse (133140551), we get a palindrome (288181882).

The spelling of 155041331 in words is "one hundred fifty-five million, forty-one thousand, three hundred thirty-one".