55398589 has 8 divisors (see below), whose sum is σ = 56306880. Its totient is φ = 54497856.

The previous prime is 55398569. The next prime is 55398593. The reversal of 55398589 is 98589355.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 55398589 - 2¹¹ = 55396541 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55398569) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13944 + ... + 17470.

It is an arithmetic number, because the mean of its divisors is an integer number (7038360).

Almost surely, 2^55398589 is an apocalyptic number.

It is an amenable number.

55398589 is a deficient number, since it is larger than the sum of its proper divisors (908291).

55398589 is a wasteful number, since it uses less digits than its factorization.

55398589 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3779.

The product of its digits is 1944000, while the sum is 52.

The square root of 55398589 is about 7443.0228402175. The cubic root of 55398589 is about 381.2117115002.

The spelling of 55398589 in words is "fifty-five million, three hundred ninety-eight thousand, five hundred eighty-nine".