45205553 has 2 divisors, whose sum is σ = 45205554. Its totient is φ = 45205552.

The previous prime is 45205549. The next prime is 45205561. The reversal of 45205553 is 35550254.

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., 43784689 + 1420864 = 6617^2 + 1192^2 .

It is a cyclic number.

It is not a de Polignac number, because 45205553 - 2² = 45205549 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (45205583) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22602776 + 22602777.

It is an arithmetic number, because the mean of its divisors is an integer number (22602777).

Almost surely, 2^45205553 is an apocalyptic number.

It is an amenable number.

45205553 is a deficient number, since it is larger than the sum of its proper divisors (1).

45205553 is an equidigital number, since it uses as much as digits as its factorization.

45205553 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15000, while the sum is 29.

The square root of 45205553 is about 6723.5074923733. The cubic root of 45205553 is about 356.2300857648.

The spelling of 45205553 in words is "forty-five million, two hundred five thousand, five hundred fifty-three".