55205319 has 16 divisors (see below), whose sum is σ = 80091872. Its totient is φ = 33619968.

The previous prime is 55205291. The next prime is 55205321. The reversal of 55205319 is 91350255.

It is not a de Polignac number, because 55205319 - 2¹⁶ = 55139783 is a prime.

It is a super-2 number, since 2×55205319² = 6095254491783522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55205419) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3514 + ... + 11079.

It is an arithmetic number, because the mean of its divisors is an integer number (5005742).

Almost surely, 2^55205319 is an apocalyptic number.

55205319 is a deficient number, since it is larger than the sum of its proper divisors (24886553).

55205319 is a wasteful number, since it uses less digits than its factorization.

55205319 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14706.

The product of its (nonzero) digits is 6750, while the sum is 30.

The square root of 55205319 is about 7430.0281964472. The cubic root of 55205319 is about 380.7678817059.

The spelling of 55205319 in words is "fifty-five million, two hundred five thousand, three hundred nineteen".