55304619 has 4 divisors (see below), whose sum is σ = 73739496. Its totient is φ = 36869744.

The previous prime is 55304609. The next prime is 55304633. The reversal of 55304619 is 91640355.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 55304619 - 2¹¹ = 55302571 is a prime.

It is a super-2 number, since 2×55304619² = 6117201765470322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 55304619.

It is not an unprimeable number, because it can be changed into a prime (55304609) 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, 9217434 + ... + 9217439.

It is an arithmetic number, because the mean of its divisors is an integer number (18434874).

Almost surely, 2^55304619 is an apocalyptic number.

55304619 is a deficient number, since it is larger than the sum of its proper divisors (18434877).

55304619 is a wasteful number, since it uses less digits than its factorization.

55304619 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18434876.

The product of its (nonzero) digits is 16200, while the sum is 33.

The square root of 55304619 is about 7436.7075376137. The cubic root of 55304619 is about 380.9960457288.

The spelling of 55304619 in words is "fifty-five million, three hundred four thousand, six hundred nineteen".