55417775 has 36 divisors (see below), whose sum is σ = 84179880. Its totient is φ = 35985600.

The previous prime is 55417763. The next prime is 55417783. The reversal of 55417775 is 57771455.

It is a happy number.

It is not a de Polignac number, because 55417775 - 2²⁰ = 54369199 is a prime.

It is a super-2 number, since 2×55417775² = 6142259571901250, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 22085 + ... + 24465.

It is an arithmetic number, because the mean of its divisors is an integer number (2338330).

Almost surely, 2^55417775 is an apocalyptic number.

55417775 is a deficient number, since it is larger than the sum of its proper divisors (28762105).

55417775 is a wasteful number, since it uses less digits than its factorization.

55417775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2424 (or 2412 counting only the distinct ones).

The product of its digits is 171500, while the sum is 41.

The square root of 55417775 is about 7444.3115867083. The cubic root of 55417775 is about 381.2557143280.

The spelling of 55417775 in words is "fifty-five million, four hundred seventeen thousand, seven hundred seventy-five".