55585398 has 16 divisors (see below), whose sum is σ = 121277376. Its totient is φ = 16844040.

The previous prime is 55585391. The next prime is 55585429. The reversal of 55585398 is 89358555.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55585391) 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, 421036 + ... + 421167.

It is an arithmetic number, because the mean of its divisors is an integer number (7579836).

Almost surely, 2^55585398 is an apocalyptic number.

55585398 is an abundant number, since it is smaller than the sum of its proper divisors (65691978).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55585398 is a wasteful number, since it uses less digits than its factorization.

55585398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 842219.

The product of its digits is 1080000, while the sum is 48.

The square root of 55585398 is about 7455.5615482672. The cubic root of 55585398 is about 381.6397240971.

The spelling of 55585398 in words is "fifty-five million, five hundred eighty-five thousand, three hundred ninety-eight".