55320663 has 8 divisors (see below), whose sum is σ = 73937776. Its totient is φ = 36792000.

The previous prime is 55320653. The next prime is 55320673. The reversal of 55320663 is 36602355.

It is an interprime number because it is at equal distance from previous prime (55320653) and next prime (55320673).

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

It is not a de Polignac number, because 55320663 - 2¹² = 55316567 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 55320663.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55320623) 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 7 ways as a sum of consecutive naturals, for example, 20638 + ... + 23163.

It is an arithmetic number, because the mean of its divisors is an integer number (9242222).

Almost surely, 2^55320663 is an apocalyptic number.

55320663 is a deficient number, since it is larger than the sum of its proper divisors (18617113).

55320663 is a wasteful number, since it uses less digits than its factorization.

55320663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44225.

The product of its (nonzero) digits is 16200, while the sum is 30.

The square root of 55320663 is about 7437.7861625621. The cubic root of 55320663 is about 381.0328847829.

The spelling of 55320663 in words is "fifty-five million, three hundred twenty thousand, six hundred sixty-three".