47245213 has 2 divisors, whose sum is σ = 47245214. Its totient is φ = 47245212.

The previous prime is 47245201. The next prime is 47245223. The reversal of 47245213 is 31254274.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 39162564 + 8082649 = 6258^2 + 2843^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47245213 is a prime.

It is a super-2 number, since 2×47245213² = 4464220302830738, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47245223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23622606 + 23622607.

It is an arithmetic number, because the mean of its divisors is an integer number (23622607).

Almost surely, 2^47245213 is an apocalyptic number.

It is an amenable number.

47245213 is a deficient number, since it is larger than the sum of its proper divisors (1).

47245213 is an equidigital number, since it uses as much as digits as its factorization.

47245213 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6720, while the sum is 28.

The square root of 47245213 is about 6873.5153306005. The cubic root of 47245213 is about 361.5091303769.

Adding to 47245213 its reverse (31254274), we get a palindrome (78499487).

The spelling of 47245213 in words is "forty-seven million, two hundred forty-five thousand, two hundred thirteen".