55394289 has 12 divisors (see below), whose sum is σ = 80080000. Its totient is φ = 36899064.

The previous prime is 55394257. The next prime is 55394293. The reversal of 55394289 is 98249355.

55394289 is a `hidden beast` number, since 553 + 94 + 2 + 8 + 9 = 666.

It is not a de Polignac number, because 55394289 - 2⁵ = 55394257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55394219) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 16452 + ... + 19530.

Almost surely, 2^55394289 is an apocalyptic number.

It is an amenable number.

55394289 is a deficient number, since it is larger than the sum of its proper divisors (24685711).

55394289 is a wasteful number, since it uses less digits than its factorization.

55394289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5084 (or 5081 counting only the distinct ones).

The product of its digits is 388800, while the sum is 45.

The square root of 55394289 is about 7442.7339734804. The cubic root of 55394289 is about 381.2018481156.

The spelling of 55394289 in words is "fifty-five million, three hundred ninety-four thousand, two hundred eighty-nine".