45503551 has 2 divisors, whose sum is σ = 45503552. Its totient is φ = 45503550.

The previous prime is 45503533. The next prime is 45503593. The reversal of 45503551 is 15530554.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 45503551 - 2²¹ = 43406399 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45503501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22751775 + 22751776.

It is an arithmetic number, because the mean of its divisors is an integer number (22751776).

Almost surely, 2^45503551 is an apocalyptic number.

45503551 is a deficient number, since it is larger than the sum of its proper divisors (1).

45503551 is an equidigital number, since it uses as much as digits as its factorization.

45503551 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7500, while the sum is 28.

The square root of 45503551 is about 6745.6319941129. The cubic root of 45503551 is about 357.0111361334.

The spelling of 45503551 in words is "forty-five million, five hundred three thousand, five hundred fifty-one".