155243015 has 16 divisors (see below), whose sum is σ = 200884320. Its totient is φ = 114785280.

The previous prime is 155242999. The next prime is 155243017. The reversal of 155243015 is 510342551.

It is not a de Polignac number, because 155243015 - 2⁴ = 155242999 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155243017) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16034 + ... + 23823.

It is an arithmetic number, because the mean of its divisors is an integer number (12555270).

Almost surely, 2^155243015 is an apocalyptic number.

155243015 is a deficient number, since it is larger than the sum of its proper divisors (45641305).

155243015 is a wasteful number, since it uses less digits than its factorization.

155243015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39922.

The product of its (nonzero) digits is 3000, while the sum is 26.

The square root of 155243015 is about 12459.6554928296. The cubic root of 155243015 is about 537.4491201162.

Adding to 155243015 its reverse (510342551), we get a palindrome (665585566).

The spelling of 155243015 in words is "one hundred fifty-five million, two hundred forty-three thousand, fifteen".