155047241 has 4 divisors (see below), whose sum is σ = 155078532. Its totient is φ = 155015952.

The previous prime is 155047223. The next prime is 155047261. The reversal of 155047241 is 142740551.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 33408400 + 121638841 = 5780^2 + 11029^2 .

It is a cyclic number.

It is not a de Polignac number, because 155047241 - 2¹⁰ = 155046217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (155047261) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6386 + ... + 18731.

It is an arithmetic number, because the mean of its divisors is an integer number (38769633).

Almost surely, 2^155047241 is an apocalyptic number.

It is an amenable number.

155047241 is a deficient number, since it is larger than the sum of its proper divisors (31291).

155047241 is an equidigital number, since it uses as much as digits as its factorization.

155047241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31290.

The product of its (nonzero) digits is 5600, while the sum is 29.

The square root of 155047241 is about 12451.7966976658. The cubic root of 155047241 is about 537.2231028088.

Adding to 155047241 its reverse (142740551), we get a palindrome (297787792).

The spelling of 155047241 in words is "one hundred fifty-five million, forty-seven thousand, two hundred forty-one".