45638473 has 2 divisors, whose sum is σ = 45638474. Its totient is φ = 45638472.

The previous prime is 45638471. The next prime is 45638497. The reversal of 45638473 is 37483654.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 43917129 + 1721344 = 6627^2 + 1312^2 .

It is a cyclic number.

It is not a de Polignac number, because 45638473 - 2¹ = 45638471 is a prime.

Together with 45638471, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (45638471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22819236 + 22819237.

It is an arithmetic number, because the mean of its divisors is an integer number (22819237).

Almost surely, 2^45638473 is an apocalyptic number.

It is an amenable number.

45638473 is a deficient number, since it is larger than the sum of its proper divisors (1).

45638473 is an equidigital number, since it uses as much as digits as its factorization.

45638473 is an evil number, because the sum of its binary digits is even.

The product of its digits is 241920, while the sum is 40.

The square root of 45638473 is about 6755.6252856416. The cubic root of 45638473 is about 357.3636443489.

The spelling of 45638473 in words is "forty-five million, six hundred thirty-eight thousand, four hundred seventy-three".