5555531 has 4 divisors (see below), whose sum is σ = 5560464. Its totient is φ = 5550600.

The previous prime is 5555527. The next prime is 5555567. The reversal of 5555531 is 1355555.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 5555531 - 2² = 5555527 is a prime.

It is a super-2 number, since 2×5555531² = 61727849383922, which contains 22 as substring.

It is a Duffinian number.

It is a nialpdrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 5555494 and 5555503.

It is not an unprimeable number, because it can be changed into a prime (5555591) 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, 146 + ... + 3336.

It is an arithmetic number, because the mean of its divisors is an integer number (1390116).

Almost surely, 2^5555531 is an apocalyptic number.

5555531 is a deficient number, since it is larger than the sum of its proper divisors (4933).

5555531 is a wasteful number, since it uses less digits than its factorization.

5555531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4932.

The product of its digits is 9375, while the sum is 29.

The square root of 5555531 is about 2357.0173949294. The cubic root of 5555531 is about 177.1095005883.

The spelling of 5555531 in words is "five million, five hundred fifty-five thousand, five hundred thirty-one".