505555406231 has 8 divisors (see below), whose sum is σ = 506023720464. Its totient is φ = 505087260480.

The previous prime is 505555406203. The next prime is 505555406269. The reversal of 505555406231 is 132604555505.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-505555406231 is a prime.

It is a super-2 number, since 2×505555406231² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505555406281) 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, 6413600 + ... + 6491946.

It is an arithmetic number, because the mean of its divisors is an integer number (63252965058).

Almost surely, 2^505555406231 is an apocalyptic number.

505555406231 is a deficient number, since it is larger than the sum of its proper divisors (468314233).

505555406231 is a wasteful number, since it uses less digits than its factorization.

505555406231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84241.

The product of its (nonzero) digits is 450000, while the sum is 41.

The spelling of 505555406231 in words is "five hundred five billion, five hundred fifty-five million, four hundred six thousand, two hundred thirty-one".