515355242 has 8 divisors (see below), whose sum is σ = 773740836. Its totient is φ = 257441632.

The previous prime is 515355241. The next prime is 515355251. The reversal of 515355242 is 242553515.

It can be written as a sum of positive squares in 2 ways, for example, as 461347441 + 54007801 = 21479^2 + 7349^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 515355199 and 515355208.

It is not an unprimeable number, because it can be changed into a prime (515355241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 115253 + ... + 119640.

Almost surely, 2^515355242 is an apocalyptic number.

515355242 is a deficient number, since it is larger than the sum of its proper divisors (258385594).

515355242 is a wasteful number, since it uses less digits than its factorization.

515355242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235992.

The product of its digits is 30000, while the sum is 32.

The square root of 515355242 is about 22701.4370029741. The cubic root of 515355242 is about 801.7437184212.

The spelling of 515355242 in words is "five hundred fifteen million, three hundred fifty-five thousand, two hundred forty-two".