55930398 has 16 divisors (see below), whose sum is σ = 112907520. Its totient is φ = 18469016.

The previous prime is 55930397. The next prime is 55930429. The reversal of 55930398 is 89303955.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55930393) 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, 42918 + ... + 44201.

It is an arithmetic number, because the mean of its divisors is an integer number (7056720).

Almost surely, 2^55930398 is an apocalyptic number.

55930398 is an abundant number, since it is smaller than the sum of its proper divisors (56977122).

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

55930398 is a wasteful number, since it uses less digits than its factorization.

55930398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87231.

The product of its (nonzero) digits is 145800, while the sum is 42.

The square root of 55930398 is about 7478.6628483974. The cubic root of 55930398 is about 382.4276662741.

The spelling of 55930398 in words is "fifty-five million, nine hundred thirty thousand, three hundred ninety-eight".