515533442 has 8 divisors (see below), whose sum is σ = 774957456. Its totient is φ = 257214292.

The previous prime is 515533439. The next prime is 515533451. The reversal of 515533442 is 244335515.

It is a happy number.

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 = 515533399 and 515533408.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 275048 + ... + 276915.

It is an arithmetic number, because the mean of its divisors is an integer number (96869682).

Almost surely, 2^515533442 is an apocalyptic number.

515533442 is a deficient number, since it is larger than the sum of its proper divisors (259424014).

515533442 is a wasteful number, since it uses less digits than its factorization.

515533442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 552432.

The product of its digits is 36000, while the sum is 32.

The square root of 515533442 is about 22705.3615254195. The cubic root of 515533442 is about 801.8361169939.

Adding to 515533442 its reverse (244335515), we get a palindrome (759868957).

The spelling of 515533442 in words is "five hundred fifteen million, five hundred thirty-three thousand, four hundred forty-two".