75503 has 2 divisors, whose sum is σ = 75504. Its totient is φ = 75502.

The previous prime is 75479. The next prime is 75511. The reversal of 75503 is 30557.

It is a strong prime.

It is an emirp because it is prime and its reverse (30557) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 75503 - 2¹⁴ = 59119 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is equal to p₇₄₃₆ and since 75503 and 7436 have the same sum of digits, it is a Honaker prime.

It is a plaindrome in base 8 and base 16.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (75533) 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 as a sum of consecutive naturals, namely, 37751 + 37752.

It is an arithmetic number, because the mean of its divisors is an integer number (37752).

2⁷⁵⁵⁰³ is an apocalyptic number.

75503 is a deficient number, since it is larger than the sum of its proper divisors (1).

75503 is an equidigital number, since it uses as much as digits as its factorization.

75503 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 525, while the sum is 20.

The square root of 75503 is about 274.7780922854. The cubic root of 75503 is about 42.2657003144.

The spelling of 75503 in words is "seventy-five thousand, five hundred three".