45205549 has 2 divisors, whose sum is σ = 45205550. Its totient is φ = 45205548.

The previous prime is 45205547. The next prime is 45205553. The reversal of 45205549 is 94550254.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24820324 + 20385225 = 4982^2 + 4515^2 .

It is a cyclic number.

It is not a de Polignac number, because 45205549 - 2¹ = 45205547 is a prime.

Together with 45205547, it forms a pair of twin primes.

It is equal to p_2729815 and since 45205549 and 2729815 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 (45205547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22602774 + 22602775.

It is an arithmetic number, because the mean of its divisors is an integer number (22602775).

Almost surely, 2^45205549 is an apocalyptic number.

It is an amenable number.

45205549 is a deficient number, since it is larger than the sum of its proper divisors (1).

45205549 is an equidigital number, since it uses as much as digits as its factorization.

45205549 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36000, while the sum is 34.

The square root of 45205549 is about 6723.5071949095. The cubic root of 45205549 is about 356.2300752579.

It can be divided in two parts, 45205 and 549, that added together give a palindrome (45754).

The spelling of 45205549 in words is "forty-five million, two hundred five thousand, five hundred forty-nine".