47300021 has 4 divisors (see below), whose sum is σ = 47317632. Its totient is φ = 47282412.

The previous prime is 47300003. The next prime is 47300041. The reversal of 47300021 is 12000374.

It is a happy number.

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 47300021 - 2¹⁰ = 47298997 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 (47300041) 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, 3845 + ... + 10458.

It is an arithmetic number, because the mean of its divisors is an integer number (11829408).

Almost surely, 2^47300021 is an apocalyptic number.

It is an amenable number.

47300021 is a deficient number, since it is larger than the sum of its proper divisors (17611).

47300021 is a wasteful number, since it uses less digits than its factorization.

47300021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17610.

The product of its (nonzero) digits is 168, while the sum is 17.

The square root of 47300021 is about 6877.5010723372. The cubic root of 47300021 is about 361.6488689475.

Adding to 47300021 its reverse (12000374), we get a palindrome (59300395).

The spelling of 47300021 in words is "forty-seven million, three hundred thousand, twenty-one".