52656021961 has 3 divisors (see below), whose sum is σ = 52656251431. Its totient is φ = 52655792492.

The previous prime is 52656021919. The next prime is 52656022057. The reversal of 52656021961 is 16912065625.

The square root of 52656021961 is 229469.

It is a perfect power (a square), and thus also a powerful 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 only one way, i.e., 49186811961 + 3469210000 = 221781^2 + 58900^2 .

It is not a de Polignac number, because 52656021961 - 2²⁷ = 52521804233 is a prime.

It is a super-3 number, since 3×52656021961³ (a number of 33 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52656021461) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 114735 + ... + 344203.

Almost surely, 2^52656021961 is an apocalyptic number.

52656021961 is the 229469-th square number.

52656021961 is the 114735-th centered octagonal number.

It is an amenable number.

52656021961 is a deficient number, since it is larger than the sum of its proper divisors (229470).

52656021961 is an frugal number, since it uses more digits than its factorization.

52656021961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 458938 (or 229469 counting only the distinct ones).

The product of its (nonzero) digits is 194400, while the sum is 43.

The spelling of 52656021961 in words is "fifty-two billion, six hundred fifty-six million, twenty-one thousand, nine hundred sixty-one".