53638469 has 4 divisors (see below), whose sum is σ = 53671020. Its totient is φ = 53605920.

The previous prime is 53638457. The next prime is 53638471. The reversal of 53638469 is 96483635.

53638469 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.

It can be written as a sum of positive squares in 2 ways, for example, as 17181025 + 36457444 = 4145^2 + 6038^2 .

It is a cyclic number.

It is not a de Polignac number, because 53638469 - 2²⁰ = 52589893 is a prime.

It is a super-2 number, since 2×53638469² = 5754170713327922, 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 (53638499) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13664 + ... + 17145.

It is an arithmetic number, because the mean of its divisors is an integer number (13417755).

Almost surely, 2^53638469 is an apocalyptic number.

It is an amenable number.

53638469 is a deficient number, since it is larger than the sum of its proper divisors (32551).

53638469 is a wasteful number, since it uses less digits than its factorization.

53638469 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32550.

The product of its digits is 466560, while the sum is 44.

The square root of 53638469 is about 7323.8288483552. The cubic root of 53638469 is about 377.1309059997.

The spelling of 53638469 in words is "fifty-three million, six hundred thirty-eight thousand, four hundred sixty-nine".