52578469 has 4 divisors (see below), whose sum is σ = 53298796. Its totient is φ = 51858144.

The previous prime is 52578419. The next prime is 52578473. The reversal of 52578469 is 96487525.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 41602500 + 10975969 = 6450^2 + 3313^2 .

It is a cyclic number.

It is not a de Polignac number, because 52578469 - 2¹⁹ = 52054181 is a prime.

It is a super-2 number, since 2×52578469² = 5528990804767922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52578419) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 360054 + ... + 360199.

It is an arithmetic number, because the mean of its divisors is an integer number (13324699).

Almost surely, 2^52578469 is an apocalyptic number.

It is an amenable number.

52578469 is a deficient number, since it is larger than the sum of its proper divisors (720327).

52578469 is an equidigital number, since it uses as much as digits as its factorization.

52578469 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 720326.

The product of its digits is 604800, while the sum is 46.

The square root of 52578469 is about 7251.1012267103. The cubic root of 52578469 is about 374.6300802487.

The spelling of 52578469 in words is "fifty-two million, five hundred seventy-eight thousand, four hundred sixty-nine".