75775540 has 24 divisors (see below), whose sum is σ = 160541640. Its totient is φ = 30041088.

The previous prime is 75775517. The next prime is 75775541. The reversal of 75775540 is 4557757.

It can be written as a sum of positive squares in 4 ways, for example, as 224676 + 75550864 = 474^2 + 8692^2 .

It is a junction number, because it is equal to n+sod(n) for n = 75775493 and 75775502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75775541) 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 in 7 ways as a sum of consecutive naturals, for example, 14505 + ... + 19024.

It is an arithmetic number, because the mean of its divisors is an integer number (6689235).

Almost surely, 2^75775540 is an apocalyptic number.

It is an amenable number.

75775540 is an abundant number, since it is smaller than the sum of its proper divisors (84766100).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

75775540 is a wasteful number, since it uses less digits than its factorization.

75775540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33651 (or 33649 counting only the distinct ones).

The product of its (nonzero) digits is 171500, while the sum is 40.

The square root of 75775540 is about 8704.9147037751. The cubic root of 75775540 is about 423.1649415345.

The spelling of 75775540 in words is "seventy-five million, seven hundred seventy-five thousand, five hundred forty".