47445613 has 2 divisors, whose sum is σ = 47445614. Its totient is φ = 47445612.

The previous prime is 47445599. The next prime is 47445631. The reversal of 47445613 is 31654474.

Together with next prime (47445631) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 47032164 + 413449 = 6858^2 + 643^2 .

It is a cyclic number.

It is not a de Polignac number, because 47445613 - 2²⁵ = 13891181 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47445913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23722806 + 23722807.

It is an arithmetic number, because the mean of its divisors is an integer number (23722807).

Almost surely, 2^47445613 is an apocalyptic number.

It is an amenable number.

47445613 is a deficient number, since it is larger than the sum of its proper divisors (1).

47445613 is an equidigital number, since it uses as much as digits as its factorization.

47445613 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 40320, while the sum is 34.

The square root of 47445613 is about 6888.0775982853. The cubic root of 47445613 is about 362.0195470861.

The spelling of 47445613 in words is "forty-seven million, four hundred forty-five thousand, six hundred thirteen".