155045215 has 16 divisors (see below), whose sum is σ = 203767200. Its totient is φ = 112551552.

The previous prime is 155045213. The next prime is 155045239. The reversal of 155045215 is 512540551.

It is a cyclic number.

It is not a de Polignac number, because 155045215 - 2¹ = 155045213 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155045213) 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, 16380 + ... + 24049.

It is an arithmetic number, because the mean of its divisors is an integer number (12735450).

Almost surely, 2^155045215 is an apocalyptic number.

155045215 is a deficient number, since it is larger than the sum of its proper divisors (48721985).

155045215 is a wasteful number, since it uses less digits than its factorization.

155045215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40506.

The product of its (nonzero) digits is 5000, while the sum is 28.

The square root of 155045215 is about 12451.7153436786. The cubic root of 155045215 is about 537.2207628365.

Adding to 155045215 its reverse (512540551), we get a palindrome (667585766).

The spelling of 155045215 in words is "one hundred fifty-five million, forty-five thousand, two hundred fifteen".