55317293 has 4 divisors (see below), whose sum is σ = 55688700. Its totient is φ = 54945888.

The previous prime is 55317289. The next prime is 55317313. The reversal of 55317293 is 39271355.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 39271355 = 5 ⋅7854271.

It can be written as a sum of positive squares in 2 ways, for example, as 23020804 + 32296489 = 4798^2 + 5683^2 .

It is a cyclic number.

It is not a de Polignac number, because 55317293 - 2² = 55317289 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55317253) 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, 185480 + ... + 185777.

It is an arithmetic number, because the mean of its divisors is an integer number (13922175).

Almost surely, 2^55317293 is an apocalyptic number.

It is an amenable number.

55317293 is a deficient number, since it is larger than the sum of its proper divisors (371407).

55317293 is a wasteful number, since it uses less digits than its factorization.

55317293 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 371406.

The product of its digits is 28350, while the sum is 35.

The square root of 55317293 is about 7437.5596132065. The cubic root of 55317293 is about 381.0251474275.

The spelling of 55317293 in words is "fifty-five million, three hundred seventeen thousand, two hundred ninety-three".