47851621 has 8 divisors (see below), whose sum is σ = 48257280. Its totient is φ = 47448192.

The previous prime is 47851613. The next prime is 47851673. The reversal of 47851621 is 12615874.

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 47851621 - 2³ = 47851613 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 (47851021) 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, 99660 + ... + 100138.

It is an arithmetic number, because the mean of its divisors is an integer number (6032160).

Almost surely, 2^47851621 is an apocalyptic number.

It is an amenable number.

47851621 is a deficient number, since it is larger than the sum of its proper divisors (405659).

47851621 is a wasteful number, since it uses less digits than its factorization.

47851621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1115.

The product of its digits is 13440, while the sum is 34.

The square root of 47851621 is about 6917.4866100340. The cubic root of 47851621 is about 363.0492562939.

The spelling of 47851621 in words is "forty-seven million, eight hundred fifty-one thousand, six hundred twenty-one".