7555 has 4 divisors (see below), whose sum is σ = 9072. Its totient is φ = 6040.

The previous prime is 7549. The next prime is 7559. The reversal of 7555 is 5557.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 7555 - 2³ = 7547 is a prime.

It is a Duffinian number.

It is a plaindrome in base 12 and base 15.

It is a nialpdrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (7559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 751 + ... + 760.

It is an arithmetic number, because the mean of its divisors is an integer number (2268).

2⁷⁵⁵⁵ is an apocalyptic number.

7555 is a deficient number, since it is larger than the sum of its proper divisors (1517).

7555 is a wasteful number, since it uses less digits than its factorization.

7555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1516.

The product of its digits is 875, while the sum is 22.

The square root of 7555 is about 86.9195029898. The cubic root of 7555 is about 19.6220700996.

The spelling of 7555 in words is "seven thousand, five hundred fifty-five".