515112261 has 12 divisors (see below), whose sum is σ = 705886272. Its totient is φ = 334124208.

The previous prime is 515112253. The next prime is 515112271. The reversal of 515112261 is 162211515.

It is not a de Polignac number, because 515112261 - 2³ = 515112253 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (515112271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 58605 + ... + 66818.

It is an arithmetic number, because the mean of its divisors is an integer number (58823856).

Almost surely, 2^515112261 is an apocalyptic number.

It is an amenable number.

515112261 is a deficient number, since it is larger than the sum of its proper divisors (190774011).

515112261 is a wasteful number, since it uses less digits than its factorization.

515112261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125500 (or 125463 counting only the distinct ones).

The product of its digits is 600, while the sum is 24.

The square root of 515112261 is about 22696.0847063982. The cubic root of 515112261 is about 801.6176958909.

Adding to 515112261 its reverse (162211515), we get a palindrome (677323776).

The spelling of 515112261 in words is "five hundred fifteen million, one hundred twelve thousand, two hundred sixty-one".