155011441 has 8 divisors (see below), whose sum is σ = 167631464. Its totient is φ = 142490880.

The previous prime is 155011403. The next prime is 155011453. The reversal of 155011441 is 144110551.

It is a happy number.

155011441 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 5193841 + 149817600 = 2279^2 + 12240^2 .

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 155011441 - 2⁷ = 155011313 is a prime.

It is not an unprimeable number, because it can be changed into a prime (155011541) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21606 + ... + 27871.

It is an arithmetic number, because the mean of its divisors is an integer number (20953933).

Almost surely, 2^155011441 is an apocalyptic number.

It is an amenable number.

155011441 is a deficient number, since it is larger than the sum of its proper divisors (12620023).

155011441 is a wasteful number, since it uses less digits than its factorization.

155011441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49731.

The product of its (nonzero) digits is 400, while the sum is 22.

The square root of 155011441 is about 12450.3590711272. The cubic root of 155011441 is about 537.1817518257.

Adding to 155011441 its reverse (144110551), we get a palindrome (299121992).

The spelling of 155011441 in words is "one hundred fifty-five million, eleven thousand, four hundred forty-one".