505656126 has 48 divisors (see below), whose sum is σ = 1162141344. Its totient is φ = 158349312.

The previous prime is 505656119. The next prime is 505656191. The reversal of 505656126 is 621656505.

It is a happy number.

It is a super-2 number, since 2×505656126² = 511376235522655752, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 221326 + ... + 223598.

It is an arithmetic number, because the mean of its divisors is an integer number (24211278).

Almost surely, 2^505656126 is an apocalyptic number.

505656126 is an abundant number, since it is smaller than the sum of its proper divisors (656485218).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

505656126 is a wasteful number, since it uses less digits than its factorization.

505656126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3025 (or 3022 counting only the distinct ones).

The product of its (nonzero) digits is 54000, while the sum is 36.

The square root of 505656126 is about 22486.7989273707. The cubic root of 505656126 is about 796.6821578854.

The spelling of 505656126 in words is "five hundred five million, six hundred fifty-six thousand, one hundred twenty-six".