48257521 has 4 divisors (see below), whose sum is σ = 51969652. Its totient is φ = 44545392.

The previous prime is 48257513. The next prime is 48257551. The reversal of 48257521 is 12575284.

It is a happy number.

48257521 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 22896225 + 25361296 = 4785^2 + 5036^2 .

It is a cyclic number.

It is not a de Polignac number, because 48257521 - 2³ = 48257513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (48257551) 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, 1856046 + ... + 1856071.

It is an arithmetic number, because the mean of its divisors is an integer number (12992413).

Almost surely, 2^48257521 is an apocalyptic number.

It is an amenable number.

48257521 is a deficient number, since it is larger than the sum of its proper divisors (3712131).

48257521 is a wasteful number, since it uses less digits than its factorization.

48257521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3712130.

The product of its digits is 22400, while the sum is 34.

The square root of 48257521 is about 6946.7633470560. The cubic root of 48257521 is about 364.0728857187.

The spelling of 48257521 in words is "forty-eight million, two hundred fifty-seven thousand, five hundred twenty-one".