75575257 has 4 divisors (see below), whose sum is σ = 75592656. Its totient is φ = 75557860.

The previous prime is 75575249. The next prime is 75575299. The reversal of 75575257 is 75257557.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 75575257 - 2³ = 75575249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (75575207) 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 in 3 ways as a sum of consecutive naturals, for example, 3882 + ... + 12892.

It is an arithmetic number, because the mean of its divisors is an integer number (18898164).

Almost surely, 2^75575257 is an apocalyptic number.

It is an amenable number.

75575257 is a deficient number, since it is larger than the sum of its proper divisors (17399).

75575257 is an equidigital number, since it uses as much as digits as its factorization.

75575257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17398.

The product of its digits is 428750, while the sum is 43.

The square root of 75575257 is about 8693.4030735955. The cubic root of 75575257 is about 422.7917889135.

The spelling of 75575257 in words is "seventy-five million, five hundred seventy-five thousand, two hundred fifty-seven".