47721241 has 2 divisors, whose sum is σ = 47721242. Its totient is φ = 47721240.

The previous prime is 47721199. The next prime is 47721257. The reversal of 47721241 is 14212774.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 31753225 + 15968016 = 5635^2 + 3996^2 .

It is a cyclic number.

It is not a de Polignac number, because 47721241 - 2¹¹ = 47719193 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (47721281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23860620 + 23860621.

It is an arithmetic number, because the mean of its divisors is an integer number (23860621).

Almost surely, 2^47721241 is an apocalyptic number.

It is an amenable number.

47721241 is a deficient number, since it is larger than the sum of its proper divisors (1).

47721241 is an equidigital number, since it uses as much as digits as its factorization.

47721241 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3136, while the sum is 28.

The square root of 47721241 is about 6908.0562389141. The cubic root of 47721241 is about 362.7192262521.

The spelling of 47721241 in words is "forty-seven million, seven hundred twenty-one thousand, two hundred forty-one".