553691 has 8 divisors (see below), whose sum is σ = 584064. Its totient is φ = 524160.

The previous prime is 553687. The next prime is 553699. The reversal of 553691 is 196355.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 553691 - 2² = 553687 is a prime.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 553691.

It is not an unprimeable number, because it can be changed into a prime (553699) 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 7 ways as a sum of consecutive naturals, for example, 1475 + ... + 1811.

It is an arithmetic number, because the mean of its divisors is an integer number (73008).

2⁵⁵³⁶⁹¹ is an apocalyptic number.

553691 is a deficient number, since it is larger than the sum of its proper divisors (30373).

553691 is a wasteful number, since it uses less digits than its factorization.

553691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 421.

The product of its digits is 4050, while the sum is 29.

The square root of 553691 is about 744.1041593756. The cubic root of 553691 is about 82.1149982762.

The spelling of 553691 in words is "five hundred fifty-three thousand, six hundred ninety-one".