48985721 has 4 divisors (see below), whose sum is σ = 51867252. Its totient is φ = 46104192.

The previous prime is 48985711. The next prime is 48985757. The reversal of 48985721 is 12758984.

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 36735721 + 12250000 = 6061^2 + 3500^2 .

It is a cyclic number.

It is not a de Polignac number, because 48985721 - 2¹⁴ = 48969337 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (48985711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1440740 + ... + 1440773.

It is an arithmetic number, because the mean of its divisors is an integer number (12966813).

Almost surely, 2^48985721 is an apocalyptic number.

It is an amenable number.

48985721 is a deficient number, since it is larger than the sum of its proper divisors (2881531).

48985721 is a wasteful number, since it uses less digits than its factorization.

48985721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2881530.

The product of its digits is 161280, while the sum is 44.

The square root of 48985721 is about 6998.9799971139. The cubic root of 48985721 is about 365.8950224972.

The spelling of 48985721 in words is "forty-eight million, nine hundred eighty-five thousand, seven hundred twenty-one".