47632021 has 4 divisors (see below), whose sum is σ = 47654944. Its totient is φ = 47609100.

The previous prime is 47631953. The next prime is 47632049. The reversal of 47632021 is 12023674.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 47632021 - 2⁹ = 47631509 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 (47632121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7995 + ... + 12616.

It is an arithmetic number, because the mean of its divisors is an integer number (11913736).

Almost surely, 2^47632021 is an apocalyptic number.

It is an amenable number.

47632021 is a deficient number, since it is larger than the sum of its proper divisors (22923).

47632021 is a wasteful number, since it uses less digits than its factorization.

47632021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22922.

The product of its (nonzero) digits is 2016, while the sum is 25.

The square root of 47632021 is about 6901.5955401632. The cubic root of 47632021 is about 362.4930376784.

Adding to 47632021 its reverse (12023674), we get a palindrome (59655695).

The spelling of 47632021 in words is "forty-seven million, six hundred thirty-two thousand, twenty-one".