47925721 has 8 divisors (see below), whose sum is σ = 51623424. Its totient is φ = 44362560.

The previous prime is 47925707. The next prime is 47925763. The reversal of 47925721 is 12752974.

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

It is a cyclic number.

It is not a de Polignac number, because 47925721 - 2⁹ = 47925209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47925791) 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, 32896 + ... + 34321.

It is an arithmetic number, because the mean of its divisors is an integer number (6452928).

Almost surely, 2^47925721 is an apocalyptic number.

It is an amenable number.

47925721 is a deficient number, since it is larger than the sum of its proper divisors (3697703).

47925721 is a wasteful number, since it uses less digits than its factorization.

47925721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67271.

The product of its digits is 35280, while the sum is 37.

The square root of 47925721 is about 6922.8405297248. The cubic root of 47925721 is about 363.2365580337.

The spelling of 47925721 in words is "forty-seven million, nine hundred twenty-five thousand, seven hundred twenty-one".