515636961 has 8 divisors (see below), whose sum is σ = 785732544. Its totient is φ = 294649680.

The previous prime is 515636939. The next prime is 515636983. The reversal of 515636961 is 169636515.

It is an interprime number because it is at equal distance from previous prime (515636939) and next prime (515636983).

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

It is not a de Polignac number, because 515636961 - 2¹⁰ = 515635937 is a prime.

It is not an unprimeable number, because it can be changed into a prime (515634961) 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, 12277050 + ... + 12277091.

It is an arithmetic number, because the mean of its divisors is an integer number (98216568).

Almost surely, 2^515636961 is an apocalyptic number.

It is an amenable number.

515636961 is a deficient number, since it is larger than the sum of its proper divisors (270095583).

515636961 is a wasteful number, since it uses less digits than its factorization.

515636961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24554151.

The product of its digits is 145800, while the sum is 42.

The square root of 515636961 is about 22707.6410267557. The cubic root of 515636961 is about 801.8897829065.

The spelling of 515636961 in words is "five hundred fifteen million, six hundred thirty-six thousand, nine hundred sixty-one".