48745721 has 4 divisors (see below), whose sum is σ = 49782912. Its totient is φ = 47708532.

The previous prime is 48745709. The next prime is 48745727. The reversal of 48745721 is 12754784.

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 48745721 - 2⁶ = 48745657 is a prime.

It is a super-2 number, since 2×48745721² = 4752290631619682, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (48745727) 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, 518525 + ... + 518618.

It is an arithmetic number, because the mean of its divisors is an integer number (12445728).

Almost surely, 2^48745721 is an apocalyptic number.

It is an amenable number.

48745721 is a deficient number, since it is larger than the sum of its proper divisors (1037191).

48745721 is a wasteful number, since it uses less digits than its factorization.

48745721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1037190.

The product of its digits is 62720, while the sum is 38.

The square root of 48745721 is about 6981.8135896055. The cubic root of 48745721 is about 365.2964901893.

The spelling of 48745721 in words is "forty-eight million, seven hundred forty-five thousand, seven hundred twenty-one".