45640013 has 2 divisors, whose sum is σ = 45640014. Its totient is φ = 45640012.

The previous prime is 45640003. The next prime is 45640031. The reversal of 45640013 is 31004654.

It is a happy number.

45640013 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

Together with next prime (45640031) 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., 33895684 + 11744329 = 5822^2 + 3427^2 .

It is a cyclic number.

It is not a de Polignac number, because 45640013 - 2¹² = 45635917 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45640003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22820006 + 22820007.

It is an arithmetic number, because the mean of its divisors is an integer number (22820007).

Almost surely, 2^45640013 is an apocalyptic number.

It is an amenable number.

45640013 is a deficient number, since it is larger than the sum of its proper divisors (1).

45640013 is an equidigital number, since it uses as much as digits as its factorization.

45640013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 45640013 is about 6755.7392637668. The cubic root of 45640013 is about 357.3676638656.

Adding to 45640013 its reverse (31004654), we get a palindrome (76644667).

The spelling of 45640013 in words is "forty-five million, six hundred forty thousand, thirteen".