75511 has 2 divisors, whose sum is σ = 75512. Its totient is φ = 75510.

The previous prime is 75503. The next prime is 75521. The reversal of 75511 is 11557.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 75511 - 2³ = 75503 is a prime.

It is a super-2 number, since 2×75511² = 11403822242, which contains 22 as substring.

It is a Chen prime.

75511 is a lucky number.

It is a plaindrome in base 8.

It is a nialpdrome in base 10.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (75521) 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, 37755 + 37756.

It is an arithmetic number, because the mean of its divisors is an integer number (37756).

2⁷⁵⁵¹¹ is an apocalyptic number.

75511 is a deficient number, since it is larger than the sum of its proper divisors (1).

75511 is an equidigital number, since it uses as much as digits as its factorization.

75511 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 175, while the sum is 19.

The square root of 75511 is about 274.7926491011. The cubic root of 75511 is about 42.2671930306.

The spelling of 75511 in words is "seventy-five thousand, five hundred eleven".