55320398 has 16 divisors (see below), whose sum is σ = 97149024. Its totient is φ = 23130240.

The previous prime is 55320379. The next prime is 55320409. The reversal of 55320398 is 89302355.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47615 + ... + 48762.

It is an arithmetic number, because the mean of its divisors is an integer number (6071814).

Almost surely, 2^55320398 is an apocalyptic number.

55320398 is a deficient number, since it is larger than the sum of its proper divisors (41828626).

55320398 is a wasteful number, since it uses less digits than its factorization.

55320398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96427.

The product of its (nonzero) digits is 32400, while the sum is 35.

The square root of 55320398 is about 7437.7683481001. The cubic root of 55320398 is about 381.0322763672.

The spelling of 55320398 in words is "fifty-five million, three hundred twenty thousand, three hundred ninety-eight".