53548309 has 4 divisors (see below), whose sum is σ = 53645004. Its totient is φ = 53451616.

The previous prime is 53548279. The next prime is 53548331. The reversal of 53548309 is 90384535.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 90384535 = 5 ⋅18076907.

It can be written as a sum of positive squares in 2 ways, for example, as 24226084 + 29322225 = 4922^2 + 5415^2 .

It is a cyclic number.

It is not a de Polignac number, because 53548309 - 2¹⁷ = 53417237 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 (53548349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47512 + ... + 48625.

It is an arithmetic number, because the mean of its divisors is an integer number (13411251).

Almost surely, 2^53548309 is an apocalyptic number.

It is an amenable number.

53548309 is a deficient number, since it is larger than the sum of its proper divisors (96695).

53548309 is an equidigital number, since it uses as much as digits as its factorization.

53548309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96694.

The product of its (nonzero) digits is 64800, while the sum is 37.

The square root of 53548309 is about 7317.6710092761. The cubic root of 53548309 is about 376.9194831650.

The spelling of 53548309 in words is "fifty-three million, five hundred forty-eight thousand, three hundred nine".