531666055 has 8 divisors (see below), whose sum is σ = 650037312. Its totient is φ = 417307488.

The previous prime is 531666029. The next prime is 531666059. The reversal of 531666055 is 550666135.

It is a happy number.

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 531666055 - 2¹⁵ = 531633287 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 (531666059) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1002879 + ... + 1003408.

It is an arithmetic number, because the mean of its divisors is an integer number (81254664).

Almost surely, 2^531666055 is an apocalyptic number.

531666055 is a deficient number, since it is larger than the sum of its proper divisors (118371257).

531666055 is a wasteful number, since it uses less digits than its factorization.

531666055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2006345.

The product of its (nonzero) digits is 81000, while the sum is 37.

The square root of 531666055 is about 23057.8848769786. The cubic root of 531666055 is about 810.1143236492.

The spelling of 531666055 in words is "five hundred thirty-one million, six hundred sixty-six thousand, fifty-five".