55316319 has 4 divisors (see below), whose sum is σ = 73755096. Its totient is φ = 36877544.

The previous prime is 55316293. The next prime is 55316323. The reversal of 55316319 is 91361355.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 55316319 - 2²⁴ = 38539103 is a prime.

It is a super-2 number, since 2×55316319² = 6119790295419522, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 55316319.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55316119) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9219384 + ... + 9219389.

It is an arithmetic number, because the mean of its divisors is an integer number (18438774).

Almost surely, 2^55316319 is an apocalyptic number.

55316319 is a deficient number, since it is larger than the sum of its proper divisors (18438777).

55316319 is a wasteful number, since it uses less digits than its factorization.

55316319 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18438776.

The product of its digits is 12150, while the sum is 33.

The square root of 55316319 is about 7437.4941344515. The cubic root of 55316319 is about 381.0229111125.

The spelling of 55316319 in words is "fifty-five million, three hundred sixteen thousand, three hundred nineteen".