45205691 has 2 divisors, whose sum is σ = 45205692. Its totient is φ = 45205690.

The previous prime is 45205673. The next prime is 45205709. The reversal of 45205691 is 19650254.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (45205673) and next prime (45205709).

It is a cyclic number.

It is not a de Polignac number, because 45205691 - 2⁶ = 45205627 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (45205631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22602845 + 22602846.

It is an arithmetic number, because the mean of its divisors is an integer number (22602846).

Almost surely, 2^45205691 is an apocalyptic number.

45205691 is a deficient number, since it is larger than the sum of its proper divisors (1).

45205691 is an equidigital number, since it uses as much as digits as its factorization.

45205691 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10800, while the sum is 32.

The square root of 45205691 is about 6723.5177548661. The cubic root of 45205691 is about 356.2304482550.

The spelling of 45205691 in words is "forty-five million, two hundred five thousand, six hundred ninety-one".