19320055 has 16 divisors (see below), whose sum is σ = 24929280. Its totient is φ = 14327712.

The previous prime is 19320047. The next prime is 19320079. The reversal of 19320055 is 55002391.

19320055 = 618² + 619² + ... + 664².

It is a cyclic number.

It is not a de Polignac number, because 19320055 - 2³ = 19320047 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2302 + ... + 6628.

It is an arithmetic number, because the mean of its divisors is an integer number (1558080).

Almost surely, 2^19320055 is an apocalyptic number.

19320055 is a deficient number, since it is larger than the sum of its proper divisors (5609225).

19320055 is a wasteful number, since it uses less digits than its factorization.

19320055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4398.

The product of its (nonzero) digits is 1350, while the sum is 25.

The square root of 19320055 is about 4395.4584516294. The cubic root of 19320055 is about 268.3301372594.

The spelling of 19320055 in words is "nineteen million, three hundred twenty thousand, fifty-five".