155045015 has 16 divisors (see below), whose sum is σ = 197305632. Its totient is φ = 116557824.

The previous prime is 155045003. The next prime is 155045021. The reversal of 155045015 is 510540551.

It is a cyclic number.

It is not a de Polignac number, because 155045015 - 2¹⁶ = 154979479 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 82112 + ... + 83978.

It is an arithmetic number, because the mean of its divisors is an integer number (12331602).

Almost surely, 2^155045015 is an apocalyptic number.

155045015 is a deficient number, since it is larger than the sum of its proper divisors (42260617).

155045015 is a wasteful number, since it uses less digits than its factorization.

155045015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2866.

The product of its (nonzero) digits is 2500, while the sum is 26.

The square root of 155045015 is about 12451.7073126540. The cubic root of 155045015 is about 537.2205318411.

Adding to 155045015 its reverse (510540551), we get a palindrome (665585566).

The spelling of 155045015 in words is "one hundred fifty-five million, forty-five thousand, fifteen".