515485961 has 8 divisors (see below), whose sum is σ = 534279240. Its totient is φ = 496948608.

The previous prime is 515485931. The next prime is 515485973. The reversal of 515485961 is 169584515.

It can be written as a sum of positive squares in 4 ways, for example, as 133518025 + 381967936 = 11555^2 + 19544^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-515485961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (515485931) 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, 59876 + ... + 67941.

It is an arithmetic number, because the mean of its divisors is an integer number (66784905).

Almost surely, 2^515485961 is an apocalyptic number.

It is an amenable number.

515485961 is a deficient number, since it is larger than the sum of its proper divisors (18793279).

515485961 is a wasteful number, since it uses less digits than its factorization.

515485961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127963.

The product of its digits is 216000, while the sum is 44.

The square root of 515485961 is about 22704.3159112976. The cubic root of 515485961 is about 801.8114996776.

The spelling of 515485961 in words is "five hundred fifteen million, four hundred eighty-five thousand, nine hundred sixty-one".