55657775 has 6 divisors (see below), whose sum is σ = 69015672. Its totient is φ = 44526200.

The previous prime is 55657753. The next prime is 55657793. The reversal of 55657775 is 57775655.

55657775 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 55657775 - 2⁸ = 55657519 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1113131 + ... + 1113180.

It is an arithmetic number, because the mean of its divisors is an integer number (11502612).

Almost surely, 2^55657775 is an apocalyptic number.

55657775 is a deficient number, since it is larger than the sum of its proper divisors (13357897).

55657775 is a wasteful number, since it uses less digits than its factorization.

55657775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2226321 (or 2226316 counting only the distinct ones).

The product of its digits is 1286250, while the sum is 47.

The square root of 55657775 is about 7460.4138625146. The cubic root of 55657775 is about 381.8052949079.

The spelling of 55657775 in words is "fifty-five million, six hundred fifty-seven thousand, seven hundred seventy-five".