553391 has 4 divisors (see below), whose sum is σ = 555000. Its totient is φ = 551784.

The previous prime is 553369. The next prime is 553411. The reversal of 553391 is 193355.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 193355 = 5 ⋅38671.

It is a cyclic number.

It is not a de Polignac number, because 553391 - 2¹⁴ = 537007 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 553391.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (553351) 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 3 ways as a sum of consecutive naturals, for example, 56 + ... + 1053.

It is an arithmetic number, because the mean of its divisors is an integer number (138750).

2⁵⁵³³⁹¹ is an apocalyptic number.

553391 is a deficient number, since it is larger than the sum of its proper divisors (1609).

553391 is a wasteful number, since it uses less digits than its factorization.

553391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1608.

The product of its digits is 2025, while the sum is 26.

The square root of 553391 is about 743.9025473810. The cubic root of 553391 is about 82.1001651232.

The spelling of 553391 in words is "five hundred fifty-three thousand, three hundred ninety-one".