515155 has 8 divisors (see below), whose sum is σ = 622512. Its totient is φ = 409248.

The previous prime is 515153. The next prime is 515173. The reversal of 515155 is 551515.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 515155 - 2¹ = 515153 is a prime.

It is a nude number because it is divisible by every one of its digits.

It is a Duffinian number.

515155 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (515153) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 724 + ... + 1246.

It is an arithmetic number, because the mean of its divisors is an integer number (77814).

2⁵¹⁵¹⁵⁵ is an apocalyptic number.

515155 is a deficient number, since it is larger than the sum of its proper divisors (107357).

515155 is a wasteful number, since it uses less digits than its factorization.

515155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 725.

The product of its digits is 625, while the sum is 22.

The square root of 515155 is about 717.7429902131. The cubic root of 515155 is about 80.1639865422.

The spelling of 515155 in words is "five hundred fifteen thousand, one hundred fifty-five".