45646591 has 2 divisors, whose sum is σ = 45646592. Its totient is φ = 45646590.

The previous prime is 45646577. The next prime is 45646637. The reversal of 45646591 is 19564654.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 45646591 - 2²¹ = 43549439 is a prime.

It is a super-2 number, since 2×45646591² = 4167222539842562, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45646501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22823295 + 22823296.

It is an arithmetic number, because the mean of its divisors is an integer number (22823296).

Almost surely, 2^45646591 is an apocalyptic number.

45646591 is a deficient number, since it is larger than the sum of its proper divisors (1).

45646591 is an equidigital number, since it uses as much as digits as its factorization.

45646591 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 129600, while the sum is 40.

The square root of 45646591 is about 6756.2260915396. The cubic root of 45646591 is about 357.3848319265.

The spelling of 45646591 in words is "forty-five million, six hundred forty-six thousand, five hundred ninety-one".