48910721 has 4 divisors (see below), whose sum is σ = 49087572. Its totient is φ = 48733872.

The previous prime is 48910669. The next prime is 48910723. The reversal of 48910721 is 12701984.

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 29866225 + 19044496 = 5465^2 + 4364^2 .

It is a cyclic number.

It is not a de Polignac number, because 48910721 - 2¹⁴ = 48894337 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (48910723) 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, 88010 + ... + 88563.

It is an arithmetic number, because the mean of its divisors is an integer number (12271893).

Almost surely, 2^48910721 is an apocalyptic number.

It is an amenable number.

48910721 is a deficient number, since it is larger than the sum of its proper divisors (176851).

48910721 is a wasteful number, since it uses less digits than its factorization.

48910721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176850.

The product of its (nonzero) digits is 4032, while the sum is 32.

The square root of 48910721 is about 6993.6200211335. The cubic root of 48910721 is about 365.7081915648.

The spelling of 48910721 in words is "forty-eight million, nine hundred ten thousand, seven hundred twenty-one".