52457947369 has 3 divisors (see below), whose sum is σ = 52458176407. Its totient is φ = 52457718332.

The previous prime is 52457947363. The next prime is 52457947393. The reversal of 52457947369 is 96374975425.

It is a happy number.

The square root of 52457947369 is 229037.

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

52457947369 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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., 42137825625 + 10320121744 = 205275^2 + 101588^2 .

It is not a de Polignac number, because 52457947369 - 2³ = 52457947361 is a prime.

It is a super-2 number, since 2×52457947369² (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 (52457947361) 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, 114519 + ... + 343555.

Almost surely, 2^52457947369 is an apocalyptic number.

52457947369 is the 229037-th square number.

52457947369 is the 114519-th centered octagonal number.

It is an amenable number.

52457947369 is a deficient number, since it is larger than the sum of its proper divisors (229038).

52457947369 is an frugal number, since it uses more digits than its factorization.

52457947369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 458074 (or 229037 counting only the distinct ones).

The product of its digits is 57153600, while the sum is 61.

The spelling of 52457947369 in words is "fifty-two billion, four hundred fifty-seven million, nine hundred forty-seven thousand, three hundred sixty-nine".