52169757649 has 9 divisors (see below), whose sum is σ = 52931345691. Its totient is φ = 51418983840.

The previous prime is 52169757599. The next prime is 52169757671. The reversal of 52169757649 is 94675796125.

The square root of 52169757649 is 228407.

It is a perfect power (a square), and thus also a powerful number.

52169757649 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 47047779025 + 5121978624 = 216905^2 + 71568^2 .

It is not a de Polignac number, because 52169757649 - 2¹⁷ = 52169626577 is a prime.

It is a super-2 number, since 2×52169757649² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52169757749) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 16215289 + ... + 16218505.

Almost surely, 2^52169757649 is an apocalyptic number.

52169757649 is the 228407-th square number.

52169757649 is the 114204-th centered octagonal number.

It is an amenable number.

52169757649 is a deficient number, since it is larger than the sum of its proper divisors (761588042).

52169757649 is an frugal number, since it uses more digits than its factorization.

52169757649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6576 (or 3288 counting only the distinct ones).

The product of its digits is 28576800, while the sum is 61.

The spelling of 52169757649 in words is "fifty-two billion, one hundred sixty-nine million, seven hundred fifty-seven thousand, six hundred forty-nine".