47252021 has 2 divisors, whose sum is σ = 47252022. Its totient is φ = 47252020.

The previous prime is 47251999. The next prime is 47252047. The reversal of 47252021 is 12025274.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 37075921 + 10176100 = 6089^2 + 3190^2 .

It is a cyclic number.

It is not a de Polignac number, because 47252021 - 2²² = 43057717 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47252081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23626010 + 23626011.

It is an arithmetic number, because the mean of its divisors is an integer number (23626011).

Almost surely, 2^47252021 is an apocalyptic number.

It is an amenable number.

47252021 is a deficient number, since it is larger than the sum of its proper divisors (1).

47252021 is an equidigital number, since it uses as much as digits as its factorization.

47252021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1120, while the sum is 23.

The square root of 47252021 is about 6874.0105469806. The cubic root of 47252021 is about 361.5264939417.

Adding to 47252021 its reverse (12025274), we get a palindrome (59277295).

The spelling of 47252021 in words is "forty-seven million, two hundred fifty-two thousand, twenty-one".