45509775 has 36 divisors (see below), whose sum is σ = 77385672. Its totient is φ = 23591360.

The previous prime is 45509759. The next prime is 45509777. The reversal of 45509775 is 57790554.

It is not a de Polignac number, because 45509775 - 2⁴ = 45509759 is a prime.

It is a super-2 number, since 2×45509775² = 4142279241101250, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45509777) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 425272 + ... + 425378.

It is an arithmetic number, because the mean of its divisors is an integer number (2149602).

Almost surely, 2^45509775 is an apocalyptic number.

45509775 is a deficient number, since it is larger than the sum of its proper divisors (31875897).

45509775 is a wasteful number, since it uses less digits than its factorization.

45509775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 280 (or 168 counting only the distinct ones).

The product of its (nonzero) digits is 220500, while the sum is 42.

The square root of 45509775 is about 6746.0933139114. The cubic root of 45509775 is about 357.0274127825.

The spelling of 45509775 in words is "forty-five million, five hundred nine thousand, seven hundred seventy-five".