45541549 has 2 divisors, whose sum is σ = 45541550. Its totient is φ = 45541548.

The previous prime is 45541547. The next prime is 45541583. The reversal of 45541549 is 94514554.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30448324 + 15093225 = 5518^2 + 3885^2 .

It is a cyclic number.

It is not a de Polignac number, because 45541549 - 2¹ = 45541547 is a prime.

Together with 45541547, it forms a pair of twin primes.

It is equal to p_2749078 and since 45541549 and 2749078 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45541547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22770774 + 22770775.

It is an arithmetic number, because the mean of its divisors is an integer number (22770775).

Almost surely, 2^45541549 is an apocalyptic number.

It is an amenable number.

45541549 is a deficient number, since it is larger than the sum of its proper divisors (1).

45541549 is an equidigital number, since it uses as much as digits as its factorization.

45541549 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 72000, while the sum is 37.

The square root of 45541549 is about 6748.4478956276. The cubic root of 45541549 is about 357.1104832141.

The spelling of 45541549 in words is "forty-five million, five hundred forty-one thousand, five hundred forty-nine".