155513241 has 24 divisors (see below), whose sum is σ = 247543296. Its totient is φ = 93471840.

The previous prime is 155513219. The next prime is 155513269. The reversal of 155513241 is 142315551.

It is not a de Polignac number, because 155513241 - 2¹¹ = 155511193 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (155513291) 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 23 ways as a sum of consecutive naturals, for example, 10425 + ... + 20486.

It is an arithmetic number, because the mean of its divisors is an integer number (10314304).

Almost surely, 2^155513241 is an apocalyptic number.

It is an amenable number.

155513241 is a deficient number, since it is larger than the sum of its proper divisors (92030055).

155513241 is a wasteful number, since it uses less digits than its factorization.

155513241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30973 (or 30970 counting only the distinct ones).

The product of its digits is 3000, while the sum is 27.

The square root of 155513241 is about 12470.4948177689. The cubic root of 155513241 is about 537.7607788838.

Adding to 155513241 its reverse (142315551), we get a palindrome (297828792).

The spelling of 155513241 in words is "one hundred fifty-five million, five hundred thirteen thousand, two hundred forty-one".