88475509 has 2 divisors, whose sum is σ = 88475510. Its totient is φ = 88475508.

The previous prime is 88475507. The next prime is 88475521. The reversal of 88475509 is 90557488.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 66178225 + 22297284 = 8135^2 + 4722^2 .

It is a cyclic number.

It is not a de Polignac number, because 88475509 - 2¹ = 88475507 is a prime.

Together with 88475507, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (88475501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44237754 + 44237755.

It is an arithmetic number, because the mean of its divisors is an integer number (44237755).

Almost surely, 2^88475509 is an apocalyptic number.

It is an amenable number.

88475509 is a deficient number, since it is larger than the sum of its proper divisors (1).

88475509 is an equidigital number, since it uses as much as digits as its factorization.

88475509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 403200, while the sum is 46.

The square root of 88475509 is about 9406.1420890820. The cubic root of 88475509 is about 445.5957328624.

The spelling of 88475509 in words is "eighty-eight million, four hundred seventy-five thousand, five hundred nine".