47875821 has 16 divisors (see below), whose sum is σ = 73102464. Its totient is φ = 27301824.

The previous prime is 47875819. The next prime is 47875829. The reversal of 47875821 is 12857874.

It is not a de Polignac number, because 47875821 - 2¹ = 47875819 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47875829) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9651 + ... + 13743.

It is an arithmetic number, because the mean of its divisors is an integer number (4568904).

Almost surely, 2^47875821 is an apocalyptic number.

It is an amenable number.

47875821 is a deficient number, since it is larger than the sum of its proper divisors (25226643).

47875821 is a wasteful number, since it uses less digits than its factorization.

47875821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4660.

The product of its digits is 125440, while the sum is 42.

The square root of 47875821 is about 6919.2355791662. The cubic root of 47875821 is about 363.1104476124.

The spelling of 47875821 in words is "forty-seven million, eight hundred seventy-five thousand, eight hundred twenty-one".