45728591 has 2 divisors, whose sum is σ = 45728592. Its totient is φ = 45728590.

The previous prime is 45728569. The next prime is 45728677. The reversal of 45728591 is 19582754.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-45728591 is a prime.

It is a super-2 number, since 2×45728591² = 4182208069690562, 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 (45728561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22864295 + 22864296.

It is an arithmetic number, because the mean of its divisors is an integer number (22864296).

Almost surely, 2^45728591 is an apocalyptic number.

45728591 is a deficient number, since it is larger than the sum of its proper divisors (1).

45728591 is an equidigital number, since it uses as much as digits as its factorization.

45728591 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 100800, while the sum is 41.

The square root of 45728591 is about 6762.2918452253. The cubic root of 45728591 is about 357.5987071565.

The spelling of 45728591 in words is "forty-five million, seven hundred twenty-eight thousand, five hundred ninety-one".