55575289 has 16 divisors (see below), whose sum is σ = 69543936. Its totient is φ = 43146000.

The previous prime is 55575287. The next prime is 55575293. The reversal of 55575289 is 98257555.

It is a cyclic number.

It is not a de Polignac number, because 55575289 - 2¹ = 55575287 is a prime.

It is a super-2 number, since 2×55575289² = 6177225494867042, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (55575287) 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 15 ways as a sum of consecutive naturals, for example, 22464 + ... + 24814.

It is an arithmetic number, because the mean of its divisors is an integer number (4346496).

Almost surely, 2^55575289 is an apocalyptic number.

It is an amenable number.

55575289 is a deficient number, since it is larger than the sum of its proper divisors (13968647).

55575289 is a wasteful number, since it uses less digits than its factorization.

55575289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2676.

The product of its digits is 630000, while the sum is 46.

The square root of 55575289 is about 7454.8835671659. The cubic root of 55575289 is about 381.6165871462.

The spelling of 55575289 in words is "fifty-five million, five hundred seventy-five thousand, two hundred eighty-nine".