75505005 has 24 divisors (see below), whose sum is σ = 131765400. Its totient is φ = 39995520.

The previous prime is 75504997. The next prime is 75505013. The reversal of 75505005 is 50050557.

It is an interprime number because it is at equal distance from previous prime (75504997) and next prime (75505013).

It can be written as a sum of positive squares in 4 ways, for example, as 14243076 + 61261929 = 3774^2 + 7827^2 .

It is not a de Polignac number, because 75505005 - 2³ = 75504997 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 75505005.

It is a congruent number.

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 23 ways as a sum of consecutive naturals, for example, 1075 + ... + 12335.

It is an arithmetic number, because the mean of its divisors is an integer number (5490225).

Almost surely, 2^75505005 is an apocalyptic number.

It is an amenable number.

75505005 is a deficient number, since it is larger than the sum of its proper divisors (56260395).

75505005 is a wasteful number, since it uses less digits than its factorization.

75505005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11421 (or 11418 counting only the distinct ones).

The product of its (nonzero) digits is 4375, while the sum is 27.

The square root of 75505005 is about 8689.3615991050. The cubic root of 75505005 is about 422.6607443628.

The spelling of 75505005 in words is "seventy-five million, five hundred five thousand, five".