47303021 has 2 divisors, whose sum is σ = 47303022. Its totient is φ = 47303020.

The previous prime is 47302987. The next prime is 47303023. The reversal of 47303021 is 12030374.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27678121 + 19624900 = 5261^2 + 4430^2 .

It is a cyclic number.

It is not a de Polignac number, because 47303021 - 2¹⁴ = 47286637 is a prime.

Together with 47303023, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 47302984 and 47303002.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47303023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23651510 + 23651511.

It is an arithmetic number, because the mean of its divisors is an integer number (23651511).

Almost surely, 2^47303021 is an apocalyptic number.

It is an amenable number.

47303021 is a deficient number, since it is larger than the sum of its proper divisors (1).

47303021 is an equidigital number, since it uses as much as digits as its factorization.

47303021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 504, while the sum is 20.

The square root of 47303021 is about 6877.7191713532. The cubic root of 47303021 is about 361.6565146360.

Adding to 47303021 its reverse (12030374), we get a palindrome (59333395).

The spelling of 47303021 in words is "forty-seven million, three hundred three thousand, twenty-one".