53479447 has 4 divisors (see below), whose sum is σ = 61119376. Its totient is φ = 45839520.

The previous prime is 53479421. The next prime is 53479453. The reversal of 53479447 is 74497435.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74497435 = 5 ⋅14899487.

It is a cyclic number.

It is not a de Polignac number, because 53479447 - 2¹⁹ = 52955159 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53479417) 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, 3819954 + ... + 3819967.

It is an arithmetic number, because the mean of its divisors is an integer number (15279844).

Almost surely, 2^53479447 is an apocalyptic number.

53479447 is a deficient number, since it is larger than the sum of its proper divisors (7639929).

53479447 is an equidigital number, since it uses as much as digits as its factorization.

53479447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7639928.

The product of its digits is 423360, while the sum is 43.

The square root of 53479447 is about 7312.9643100456. The cubic root of 53479447 is about 376.7578436789.

The spelling of 53479447 in words is "fifty-three million, four hundred seventy-nine thousand, four hundred forty-seven".