55439119 has 4 divisors (see below), whose sum is σ = 56140960. Its totient is φ = 54737280.

The previous prime is 55439101. The next prime is 55439221. The reversal of 55439119 is 91193455.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 91193455 = 5 ⋅18238691.

It is a cyclic number.

It is not a de Polignac number, because 55439119 - 2¹¹ = 55437071 is a prime.

It is a super-2 number, since 2×55439119² = 6146991830992322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55439519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 350802 + ... + 350959.

It is an arithmetic number, because the mean of its divisors is an integer number (14035240).

Almost surely, 2^55439119 is an apocalyptic number.

55439119 is a deficient number, since it is larger than the sum of its proper divisors (701841).

55439119 is an equidigital number, since it uses as much as digits as its factorization.

55439119 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 701840.

The product of its digits is 24300, while the sum is 37.

The square root of 55439119 is about 7445.7450265235. The cubic root of 55439119 is about 381.3046545671.

The spelling of 55439119 in words is "fifty-five million, four hundred thirty-nine thousand, one hundred nineteen".