48936721 has 4 divisors (see below), whose sum is σ = 49096432. Its totient is φ = 48777012.

The previous prime is 48936707. The next prime is 48936731. The reversal of 48936721 is 12763984.

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 48936721 - 2¹¹ = 48934673 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (48936731) 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, 79395 + ... + 80008.

It is an arithmetic number, because the mean of its divisors is an integer number (12274108).

Almost surely, 2^48936721 is an apocalyptic number.

It is an amenable number.

48936721 is a deficient number, since it is larger than the sum of its proper divisors (159711).

48936721 is a wasteful number, since it uses less digits than its factorization.

48936721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159710.

The product of its digits is 72576, while the sum is 40.

The square root of 48936721 is about 6995.4786112174. The cubic root of 48936721 is about 365.7729812364.

The spelling of 48936721 in words is "forty-eight million, nine hundred thirty-six thousand, seven hundred twenty-one".