515398161 has 16 divisors (see below), whose sum is σ = 725034240. Its totient is φ = 324763920.

The previous prime is 515398127. The next prime is 515398171. The reversal of 515398161 is 161893515.

It is not a de Polignac number, because 515398161 - 2¹⁰ = 515397137 is a prime.

It is not an unprimeable number, because it can be changed into a prime (515398171) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15046 + ... + 35456.

It is an arithmetic number, because the mean of its divisors is an integer number (45314640).

Almost surely, 2^515398161 is an apocalyptic number.

It is an amenable number.

515398161 is a deficient number, since it is larger than the sum of its proper divisors (209636079).

515398161 is a wasteful number, since it uses less digits than its factorization.

515398161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20876.

The product of its digits is 32400, while the sum is 39.

The square root of 515398161 is about 22702.3822758758. The cubic root of 515398161 is about 801.7659743207.

The spelling of 515398161 in words is "five hundred fifteen million, three hundred ninety-eight thousand, one hundred sixty-one".