45649213 has 2 divisors, whose sum is σ = 45649214. Its totient is φ = 45649212.

The previous prime is 45649211. The next prime is 45649223. The reversal of 45649213 is 31294654.

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., 41641209 + 4008004 = 6453^2 + 2002^2 .

It is a cyclic number.

It is not a de Polignac number, because 45649213 - 2¹ = 45649211 is a prime.

Together with 45649211, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45649211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22824606 + 22824607.

It is an arithmetic number, because the mean of its divisors is an integer number (22824607).

Almost surely, 2^45649213 is an apocalyptic number.

It is an amenable number.

45649213 is a deficient number, since it is larger than the sum of its proper divisors (1).

45649213 is an equidigital number, since it uses as much as digits as its factorization.

45649213 is an evil number, because the sum of its binary digits is even.

The product of its digits is 25920, while the sum is 34.

The square root of 45649213 is about 6756.4201319930. The cubic root of 45649213 is about 357.3916746798.

The spelling of 45649213 in words is "forty-five million, six hundred forty-nine thousand, two hundred thirteen".