55575783 has 12 divisors (see below), whose sum is σ = 81179280. Its totient is φ = 36633696.

The previous prime is 55575757. The next prime is 55575811. The reversal of 55575783 is 38757555.

55575783 is a `hidden beast` number, since 5 + 5 + 575 + 78 + 3 = 666.

It is not a de Polignac number, because 55575783 - 2⁶ = 55575719 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55575733) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 33891 + ... + 35492.

It is an arithmetic number, because the mean of its divisors is an integer number (6764940).

Almost surely, 2^55575783 is an apocalyptic number.

55575783 is a deficient number, since it is larger than the sum of its proper divisors (25603497).

55575783 is a wasteful number, since it uses less digits than its factorization.

55575783 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69478 (or 69475 counting only the distinct ones).

The product of its digits is 735000, while the sum is 45.

The square root of 55575783 is about 7454.9166997358. The cubic root of 55575783 is about 381.6177178528.

The spelling of 55575783 in words is "fifty-five million, five hundred seventy-five thousand, seven hundred eighty-three".