515506642 has 16 divisors (see below), whose sum is σ = 884036160. Its totient is φ = 220853808.

The previous prime is 515506637. The next prime is 515506687. The reversal of 515506642 is 246605515.

It is a super-2 number, since 2×515506642² = 531494195892232328, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 515506598 and 515506607.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54853 + ... + 63559.

It is an arithmetic number, because the mean of its divisors is an integer number (55252260).

Almost surely, 2^515506642 is an apocalyptic number.

515506642 is a deficient number, since it is larger than the sum of its proper divisors (368529518).

515506642 is a wasteful number, since it uses less digits than its factorization.

515506642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12945.

The product of its (nonzero) digits is 36000, while the sum is 34.

The square root of 515506642 is about 22704.7713487716. The cubic root of 515506642 is about 801.8222222728.

The spelling of 515506642 in words is "five hundred fifteen million, five hundred six thousand, six hundred forty-two".