155240013 has 16 divisors (see below), whose sum is σ = 222520320. Its totient is φ = 95958576.

The previous prime is 155240011. The next prime is 155240017. The reversal of 155240013 is 310042551.

It is not a de Polignac number, because 155240013 - 2¹ = 155240011 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155240011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26295 + ... + 31652.

It is an arithmetic number, because the mean of its divisors is an integer number (13907520).

Almost surely, 2^155240013 is an apocalyptic number.

It is an amenable number.

155240013 is a deficient number, since it is larger than the sum of its proper divisors (67280307).

155240013 is a wasteful number, since it uses less digits than its factorization.

155240013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58016.

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 155240013 is about 12459.5350234268. The cubic root of 155240013 is about 537.4456558001.

Adding to 155240013 its reverse (310042551), we get a palindrome (465282564).

The spelling of 155240013 in words is "one hundred fifty-five million, two hundred forty thousand, thirteen".