48865721 has 4 divisors (see below), whose sum is σ = 48879732. Its totient is φ = 48851712.

The previous prime is 48865711. The next prime is 48865741. The reversal of 48865721 is 12756884.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 15642025 + 33223696 = 3955^2 + 5764^2 .

It is a cyclic number.

It is not a de Polignac number, because 48865721 - 2⁶ = 48865657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (48865711) 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, 2825 + ... + 10281.

It is an arithmetic number, because the mean of its divisors is an integer number (12219933).

Almost surely, 2^48865721 is an apocalyptic number.

It is an amenable number.

48865721 is a deficient number, since it is larger than the sum of its proper divisors (14011).

48865721 is an equidigital number, since it uses as much as digits as its factorization.

48865721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14010.

The product of its digits is 107520, while the sum is 41.

The square root of 48865721 is about 6990.4020628287. The cubic root of 48865721 is about 365.5960013137.

The spelling of 48865721 in words is "forty-eight million, eight hundred sixty-five thousand, seven hundred twenty-one".