55393383 has 4 divisors (see below), whose sum is σ = 73857848. Its totient is φ = 36928920.

The previous prime is 55393369. The next prime is 55393409. The reversal of 55393383 is 38339355.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 55393383 - 2⁶ = 55393319 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 (55393313) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9232228 + ... + 9232233.

It is an arithmetic number, because the mean of its divisors is an integer number (18464462).

Almost surely, 2^55393383 is an apocalyptic number.

55393383 is a deficient number, since it is larger than the sum of its proper divisors (18464465).

55393383 is a wasteful number, since it uses less digits than its factorization.

55393383 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18464464.

The product of its digits is 145800, while the sum is 39.

The square root of 55393383 is about 7442.6731085007. The cubic root of 55393383 is about 381.1997698583.

The spelling of 55393383 in words is "fifty-five million, three hundred ninety-three thousand, three hundred eighty-three".