47801621 has 8 divisors (see below), whose sum is σ = 54697920. Its totient is φ = 40922208.

The previous prime is 47801563. The next prime is 47801639. The reversal of 47801621 is 12610874.

47801621 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 47801621 - 2¹⁸ = 47539477 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47801651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2585 + ... + 10113.

It is an arithmetic number, because the mean of its divisors is an integer number (6837240).

Almost surely, 2^47801621 is an apocalyptic number.

It is an amenable number.

47801621 is a deficient number, since it is larger than the sum of its proper divisors (6896299).

47801621 is an equidigital number, since it uses as much as digits as its factorization.

47801621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8443.

The product of its (nonzero) digits is 2688, while the sum is 29.

The square root of 47801621 is about 6913.8716360661. The cubic root of 47801621 is about 362.9227625716.

The spelling of 47801621 in words is "forty-seven million, eight hundred one thousand, six hundred twenty-one".