75555 has 24 divisors (see below), whose sum is σ = 138528. Its totient is φ = 38016.

The previous prime is 75553. The next prime is 75557. The reversal of 75555 is 55557.

It is an interprime number because it is at equal distance from previous prime (75553) and next prime (75557).

It is not a de Polignac number, because 75555 - 2¹ = 75553 is a prime.

75555 is a modest number, since divided by 555 gives 75 as remainder.

It is a nialpdrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (75553) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 999 + ... + 1071.

It is an arithmetic number, because the mean of its divisors is an integer number (5772).

2⁷⁵⁵⁵⁵ is an apocalyptic number.

75555 is a deficient number, since it is larger than the sum of its proper divisors (62973).

75555 is a wasteful number, since it uses less digits than its factorization.

75555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107 (or 104 counting only the distinct ones).

The product of its digits is 4375, while the sum is 27.

The square root of 75555 is about 274.8726978075. The cubic root of 75555 is about 42.2754010859.

It can be divided in two parts, 75 and 555, that added together give a triangular number (630 = T₃₅).

The spelling of 75555 in words is "seventy-five thousand, five hundred fifty-five".