75755545 has 16 divisors (see below), whose sum is σ = 92751120. Its totient is φ = 59387904.

The previous prime is 75755521. The next prime is 75755579. The reversal of 75755545 is 54555757.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 2550409 + 73205136 = 1597^2 + 8556^2 .

It is a cyclic number.

It is not a de Polignac number, because 75755545 - 2¹¹ = 75753497 is a prime.

It is an unprimeable number.

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 in 15 ways as a sum of consecutive naturals, for example, 52149 + ... + 53581.

It is an arithmetic number, because the mean of its divisors is an integer number (5796945).

Almost surely, 2^75755545 is an apocalyptic number.

It is an amenable number.

75755545 is a deficient number, since it is larger than the sum of its proper divisors (16995575).

75755545 is a wasteful number, since it uses less digits than its factorization.

75755545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1644.

The product of its digits is 612500, while the sum is 43.

The square root of 75755545 is about 8703.7661388620. The cubic root of 75755545 is about 423.1277178810.

The spelling of 75755545 in words is "seventy-five million, seven hundred fifty-five thousand, five hundred forty-five".