516025261 has 4 divisors (see below), whose sum is σ = 521134524. Its totient is φ = 510916000.

The previous prime is 516025249. The next prime is 516025271. The reversal of 516025261 is 162520615.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 379275625 + 136749636 = 19475^2 + 11694^2 .

It is a cyclic number.

It is not a de Polignac number, because 516025261 - 2⁵ = 516025229 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (516025271) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2554480 + ... + 2554681.

It is an arithmetic number, because the mean of its divisors is an integer number (130283631).

Almost surely, 2^516025261 is an apocalyptic number.

It is an amenable number.

516025261 is a deficient number, since it is larger than the sum of its proper divisors (5109263).

516025261 is a wasteful number, since it uses less digits than its factorization.

516025261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5109262.

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 516025261 is about 22716.1894031547. The cubic root of 516025261 is about 802.0910198871.

Adding to 516025261 its reverse (162520615), we get a palindrome (678545876).

The spelling of 516025261 in words is "five hundred sixteen million, twenty-five thousand, two hundred sixty-one".