48481809 has 4 divisors (see below), whose sum is σ = 64642416. Its totient is φ = 32321204.

The previous prime is 48481781. The next prime is 48481813. The reversal of 48481809 is 90818484.

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.

It is a cyclic number.

It is not a de Polignac number, because 48481809 - 2¹⁶ = 48416273 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (48481879) 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, 8080299 + ... + 8080304.

It is an arithmetic number, because the mean of its divisors is an integer number (16160604).

Almost surely, 2^48481809 is an apocalyptic number.

It is an amenable number.

48481809 is a deficient number, since it is larger than the sum of its proper divisors (16160607).

48481809 is a wasteful number, since it uses less digits than its factorization.

48481809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16160606.

The product of its (nonzero) digits is 73728, while the sum is 42.

The square root of 48481809 is about 6962.8879784182. The cubic root of 48481809 is about 364.6360518081.

The spelling of 48481809 in words is "forty-eight million, four hundred eighty-one thousand, eight hundred nine".