155241331 has 16 divisors (see below), whose sum is σ = 191047680. Its totient is φ = 123108480.

The previous prime is 155241323. The next prime is 155241349. The reversal of 155241331 is 133142551.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 155241331 - 2³ = 155241323 is a prime.

It is a super-2 number, since 2×155241331² = 48199741701303122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 155241296 and 155241305.

It is not an unprimeable number, because it can be changed into a prime (155241311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4035 + ... + 18076.

It is an arithmetic number, because the mean of its divisors is an integer number (11940480).

Almost surely, 2^155241331 is an apocalyptic number.

155241331 is a deficient number, since it is larger than the sum of its proper divisors (35806349).

155241331 is a wasteful number, since it uses less digits than its factorization.

155241331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22194.

The product of its digits is 1800, while the sum is 25.

The square root of 155241331 is about 12459.5879145339. The cubic root of 155241331 is about 537.4471767812.

Adding to 155241331 its reverse (133142551), we get a palindrome (288383882).

The spelling of 155241331 in words is "one hundred fifty-five million, two hundred forty-one thousand, three hundred thirty-one".