48257221 has 4 divisors (see below), whose sum is σ = 49075200. Its totient is φ = 47439244.

The previous prime is 48257201. The next prime is 48257233. The reversal of 48257221 is 12275284.

It is a happy number.

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 48257221 - 2⁹ = 48256709 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 (48257201) 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, 408901 + ... + 409018.

It is an arithmetic number, because the mean of its divisors is an integer number (12268800).

Almost surely, 2^48257221 is an apocalyptic number.

It is an amenable number.

48257221 is a deficient number, since it is larger than the sum of its proper divisors (817979).

48257221 is an equidigital number, since it uses as much as digits as its factorization.

48257221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 817978.

The product of its digits is 8960, while the sum is 31.

The square root of 48257221 is about 6946.7417542327. The cubic root of 48257221 is about 364.0721312795.

The spelling of 48257221 in words is "forty-eight million, two hundred fifty-seven thousand, two hundred twenty-one".