48545721 has 72 divisors (see below), whose sum is σ = 87070464. Its totient is φ = 25945920.

The previous prime is 48545719. The next prime is 48545723. The reversal of 48545721 is 12754584.

48545721 is a `hidden beast` number, since 4 + 85 + 4 + 572 + 1 = 666.

It is an interprime number because it is at equal distance from previous prime (48545719) and next prime (48545723).

It is not a de Polignac number, because 48545721 - 2¹ = 48545719 is a prime.

It is not an unprimeable number, because it can be changed into a prime (48545723) 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 71 ways as a sum of consecutive naturals, for example, 724530 + ... + 724596.

It is an arithmetic number, because the mean of its divisors is an integer number (1209312).

Almost surely, 2^48545721 is an apocalyptic number.

It is an amenable number.

48545721 is a deficient number, since it is larger than the sum of its proper divisors (38524743).

48545721 is a wasteful number, since it uses less digits than its factorization.

48545721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171 (or 161 counting only the distinct ones).

The product of its digits is 44800, while the sum is 36.

The square root of 48545721 is about 6967.4759418314. The cubic root of 48545721 is about 364.7962107539.

The spelling of 48545721 in words is "forty-eight million, five hundred forty-five thousand, seven hundred twenty-one".