45617591 has 2 divisors, whose sum is σ = 45617592. Its totient is φ = 45617590.

The previous prime is 45617581. The next prime is 45617599. The reversal of 45617591 is 19571654.

45617591 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 45617591 - 2¹⁸ = 45355447 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45617599) 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, 22808795 + 22808796.

It is an arithmetic number, because the mean of its divisors is an integer number (22808796).

Almost surely, 2^45617591 is an apocalyptic number.

45617591 is a deficient number, since it is larger than the sum of its proper divisors (1).

45617591 is an equidigital number, since it uses as much as digits as its factorization.

45617591 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 37800, while the sum is 38.

The square root of 45617591 is about 6754.0795820008. The cubic root of 45617591 is about 357.3091318175.

The spelling of 45617591 in words is "forty-five million, six hundred seventeen thousand, five hundred ninety-one".