48521721 has 8 divisors (see below), whose sum is σ = 65514880. Its totient is φ = 31938192.

The previous prime is 48521663. The next prime is 48521729. The reversal of 48521721 is 12712584.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 48521721 - 2¹⁷ = 48390649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (48521729) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 102130 + ... + 102603.

It is an arithmetic number, because the mean of its divisors is an integer number (8189360).

Almost surely, 2^48521721 is an apocalyptic number.

It is an amenable number.

48521721 is a deficient number, since it is larger than the sum of its proper divisors (16993159).

48521721 is a wasteful number, since it uses less digits than its factorization.

48521721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204815.

The product of its digits is 4480, while the sum is 30.

The square root of 48521721 is about 6965.7534409423. The cubic root of 48521721 is about 364.7360849449.

The spelling of 48521721 in words is "forty-eight million, five hundred twenty-one thousand, seven hundred twenty-one".