515342223 has 16 divisors (see below), whose sum is σ = 832876800. Its totient is φ = 312328440.

The previous prime is 515342221. The next prime is 515342227. The reversal of 515342223 is 322243515.

It is a happy number.

It is not a de Polignac number, because 515342223 - 2¹ = 515342221 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (515342221) 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, 867283 + ... + 867876.

It is an arithmetic number, because the mean of its divisors is an integer number (52054800).

Almost surely, 2^515342223 is an apocalyptic number.

515342223 is a deficient number, since it is larger than the sum of its proper divisors (317534577).

515342223 is a wasteful number, since it uses less digits than its factorization.

515342223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1735179 (or 1735173 counting only the distinct ones).

The product of its digits is 7200, while the sum is 27.

The square root of 515342223 is about 22701.1502572006. The cubic root of 515342223 is about 801.7369670980.

Adding to 515342223 its reverse (322243515), we get a palindrome (837585738).

The spelling of 515342223 in words is "five hundred fifteen million, three hundred forty-two thousand, two hundred twenty-three".