55385942 has 4 divisors (see below), whose sum is σ = 83078916. Its totient is φ = 27692970.

The previous prime is 55385927. The next prime is 55385963. The reversal of 55385942 is 24958355.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24958355 = 5 ⋅4991671.

It is a self number, because there is not a number n which added to its sum of digits gives 55385942.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13846484 + ... + 13846487.

It is an arithmetic number, because the mean of its divisors is an integer number (20769729).

Almost surely, 2^55385942 is an apocalyptic number.

55385942 is a deficient number, since it is larger than the sum of its proper divisors (27692974).

55385942 is a wasteful number, since it uses less digits than its factorization.

55385942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27692973.

The product of its digits is 216000, while the sum is 41.

The square root of 55385942 is about 7442.1732041118. The cubic root of 55385942 is about 381.1827002232.

The spelling of 55385942 in words is "fifty-five million, three hundred eighty-five thousand, nine hundred forty-two".