52885023739681 has 81 divisors (see below), whose sum is σ = 68341570536729. Its totient is φ = 40793252763648.

The previous prime is 52885023739657. The next prime is 52885023739697. The reversal of 52885023739681 is 18693732058825.

The square root of 52885023739681 is 7272209.

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

It can be written as a sum of positive squares in 4 ways, for example, as 9989335469281 + 42895688270400 = 3160591^2 + 6549480^2 .

It is not a de Polignac number, because 52885023739681 - 2¹³ = 52885023731489 is a prime.

It is a super-2 number, since 2×52885023739681² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (52885023739651) by changing a digit.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 19904034705 + ... + 19904037361.

Almost surely, 2^{52885023739681} is an apocalyptic number.

52885023739681 is the 7272209-th square number.

52885023739681 is the 3636105-th centered octagonal number.

It is an amenable number.

52885023739681 is a deficient number, since it is larger than the sum of its proper divisors (15456546797048).

52885023739681 is an frugal number, since it uses more digits than its factorization.

52885023739681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5408 (or 2704 counting only the distinct ones).

The product of its (nonzero) digits is 174182400, while the sum is 67.

The spelling of 52885023739681 in words is "fifty-two trillion, eight hundred eighty-five billion, twenty-three million, seven hundred thirty-nine thousand, six hundred eighty-one".