55837919 has 4 divisors (see below), whose sum is σ = 56602896. Its totient is φ = 55072944.

The previous prime is 55837897. The next prime is 55837931. The reversal of 55837919 is 91973855.

55837919 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 91973855 = 5 ⋅18394771.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55837919 is a prime.

It is a super-2 number, since 2×55837919² = 6235746396501122, 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 (55837319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 382379 + ... + 382524.

It is an arithmetic number, because the mean of its divisors is an integer number (14150724).

Almost surely, 2^55837919 is an apocalyptic number.

55837919 is a deficient number, since it is larger than the sum of its proper divisors (764977).

55837919 is an equidigital number, since it uses as much as digits as its factorization.

55837919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 764976.

The product of its digits is 340200, while the sum is 47.

The square root of 55837919 is about 7472.4774338903. The cubic root of 55837919 is about 382.2167729747.

The spelling of 55837919 in words is "fifty-five million, eight hundred thirty-seven thousand, nine hundred nineteen".