53647873 has 4 divisors (see below), whose sum is σ = 54327040. Its totient is φ = 52968708.

The previous prime is 53647871. The next prime is 53647877. The reversal of 53647873 is 37874635.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 37874635 = 5 ⋅7574927.

It is a cyclic number.

It is not a de Polignac number, because 53647873 - 2¹ = 53647871 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53647871) 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, 339465 + ... + 339622.

It is an arithmetic number, because the mean of its divisors is an integer number (13581760).

Almost surely, 2^53647873 is an apocalyptic number.

It is an amenable number.

53647873 is a deficient number, since it is larger than the sum of its proper divisors (679167).

53647873 is an equidigital number, since it uses as much as digits as its factorization.

53647873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 679166.

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

The square root of 53647873 is about 7324.4708341286. The cubic root of 53647873 is about 377.1529444848.

The spelling of 53647873 in words is "fifty-three million, six hundred forty-seven thousand, eight hundred seventy-three".