55000775 has 6 divisors (see below), whose sum is σ = 68200992. Its totient is φ = 44000600.

The previous prime is 55000753. The next prime is 55000783. The reversal of 55000775 is 57700055.

It is not a de Polignac number, because 55000775 - 2¹⁰ = 54999751 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1099991 + ... + 1100040.

It is an arithmetic number, because the mean of its divisors is an integer number (11366832).

Almost surely, 2^55000775 is an apocalyptic number.

55000775 is a deficient number, since it is larger than the sum of its proper divisors (13200217).

55000775 is a wasteful number, since it uses less digits than its factorization.

55000775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2200041 (or 2200036 counting only the distinct ones).

The product of its (nonzero) digits is 6125, while the sum is 29.

The square root of 55000775 is about 7416.2507374009. The cubic root of 55000775 is about 380.2970323030.

The spelling of 55000775 in words is "fifty-five million, seven hundred seventy-five", and thus it is an aban number.