652716952281 has 27 divisors (see below), whose sum is σ = 956531649567. Its totient is φ = 428902729920.

The previous prime is 652716952243. The next prime is 652716952291. The reversal of 652716952281 is 182259617256.

The square root of 652716952281 is 807909.

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

652716952281 is a `hidden beast` number, since 6 + 5 + 27 + 16 + 9 + 522 + 81 = 666.

It can be written as a sum of positive squares in only one way, i.e., 118332560025 + 534384392256 = 343995^2 + 731016^2 .

It is not a de Polignac number, because 652716952281 - 2³⁵ = 618357213913 is a prime.

It is a super-2 number, since 2×652716952281² (a number of 24 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (652716952201) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 172082721 + ... + 172086513.

Almost surely, 2^652716952281 is an apocalyptic number.

652716952281 is the 807909-th square number.

652716952281 is the 403955-th centered octagonal number.

It is an amenable number.

652716952281 is a deficient number, since it is larger than the sum of its proper divisors (303814697286).

652716952281 is an frugal number, since it uses more digits than its factorization.

652716952281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7734 (or 3867 counting only the distinct ones).

The product of its digits is 3628800, while the sum is 54.

The spelling of 652716952281 in words is "six hundred fifty-two billion, seven hundred sixteen million, nine hundred fifty-two thousand, two hundred eighty-one".