52087207261 has 4 divisors (see below), whose sum is σ = 52087742812. Its totient is φ = 52086671712.

The previous prime is 52087207217. The next prime is 52087207321. The reversal of 52087207261 is 16270278025.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 25878835161 + 26208372100 = 160869^2 + 161890^2 .

It is a cyclic number.

It is not a de Polignac number, because 52087207261 - 2¹⁵ = 52087174493 is a prime.

It is a super-2 number, since 2×52087207261² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52087207561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 76200 + ... + 331633.

It is an arithmetic number, because the mean of its divisors is an integer number (13021935703).

Almost surely, 2^52087207261 is an apocalyptic number.

It is an amenable number.

52087207261 is a deficient number, since it is larger than the sum of its proper divisors (535551).

52087207261 is a wasteful number, since it uses less digits than its factorization.

52087207261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 535550.

The product of its (nonzero) digits is 94080, while the sum is 40.

The spelling of 52087207261 in words is "fifty-two billion, eighty-seven million, two hundred seven thousand, two hundred sixty-one".