55389923 has 8 divisors (see below), whose sum is σ = 56816640. Its totient is φ = 53973640.

The previous prime is 55389853. The next prime is 55389931. The reversal of 55389923 is 32998355.

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 55389923 - 2⁸ = 55389667 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55389953) 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, 8768 + ... + 13698.

It is an arithmetic number, because the mean of its divisors is an integer number (7102080).

Almost surely, 2^55389923 is an apocalyptic number.

55389923 is a deficient number, since it is larger than the sum of its proper divisors (1426717).

55389923 is a wasteful number, since it uses less digits than its factorization.

55389923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5217.

The product of its digits is 291600, while the sum is 44.

The square root of 55389923 is about 7442.4406615035. The cubic root of 55389923 is about 381.1918328172.

The spelling of 55389923 in words is "fifty-five million, three hundred eighty-nine thousand, nine hundred twenty-three".