55321366 has 8 divisors (see below), whose sum is σ = 87863400. Its totient is φ = 26033568.

The previous prime is 55321361. The next prime is 55321367. The reversal of 55321366 is 66312355.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×55321366² = 6120907072211912, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55321361) 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 in 3 ways as a sum of consecutive naturals, for example, 813516 + ... + 813583.

It is an arithmetic number, because the mean of its divisors is an integer number (10982925).

Almost surely, 2^55321366 is an apocalyptic number.

55321366 is a deficient number, since it is larger than the sum of its proper divisors (32542034).

55321366 is a wasteful number, since it uses less digits than its factorization.

55321366 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1627118.

The product of its digits is 16200, while the sum is 31.

The square root of 55321366 is about 7437.8334210978. The cubic root of 55321366 is about 381.0344987970.

The spelling of 55321366 in words is "fifty-five million, three hundred twenty-one thousand, three hundred sixty-six".