55580323 has 2 divisors, whose sum is σ = 55580324. Its totient is φ = 55580322.

The previous prime is 55580279. The next prime is 55580347. The reversal of 55580323 is 32308555.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55580323 is a prime.

It is not a weakly prime, because it can be changed into another prime (55580353) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27790161 + 27790162.

It is an arithmetic number, because the mean of its divisors is an integer number (27790162).

Almost surely, 2^55580323 is an apocalyptic number.

55580323 is a deficient number, since it is larger than the sum of its proper divisors (1).

55580323 is an equidigital number, since it uses as much as digits as its factorization.

55580323 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18000, while the sum is 31.

The square root of 55580323 is about 7455.2211905483. The cubic root of 55580323 is about 381.6281090530.

Adding to 55580323 its reverse (32308555), we get a palindrome (87888878).

The spelling of 55580323 in words is "fifty-five million, five hundred eighty thousand, three hundred twenty-three".