47250821 has 8 divisors (see below), whose sum is σ = 47951904. Its totient is φ = 46553040.

The previous prime is 47250811. The next prime is 47250829. The reversal of 47250821 is 12805274.

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

It is not a de Polignac number, because 47250821 - 2⁶ = 47250757 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47250829) 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, 46895 + ... + 47891.

It is an arithmetic number, because the mean of its divisors is an integer number (5993988).

Almost surely, 2^47250821 is an apocalyptic number.

It is an amenable number.

47250821 is a deficient number, since it is larger than the sum of its proper divisors (701083).

47250821 is an equidigital number, since it uses as much as digits as its factorization.

47250821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1651.

The product of its (nonzero) digits is 4480, while the sum is 29.

The square root of 47250821 is about 6873.9232611370. The cubic root of 47250821 is about 361.5234335049.

The spelling of 47250821 in words is "forty-seven million, two hundred fifty thousand, eight hundred twenty-one".