502056866 has 4 divisors (see below), whose sum is σ = 753085302. Its totient is φ = 251028432.

The previous prime is 502056847. The next prime is 502056887. The reversal of 502056866 is 668650205.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 320589025 + 181467841 = 17905^2 + 13471^2 .

It is a super-2 number, since 2×502056866² = 504122193395483912, which contains 22 as substring.

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 as a sum of consecutive naturals, namely, 125514215 + ... + 125514218.

Almost surely, 2^502056866 is an apocalyptic number.

502056866 is a deficient number, since it is larger than the sum of its proper divisors (251028436).

502056866 is a wasteful number, since it uses less digits than its factorization.

502056866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 251028435.

The product of its (nonzero) digits is 86400, while the sum is 38.

The square root of 502056866 is about 22406.6254933669. The cubic root of 502056866 is about 794.7873940665.

The spelling of 502056866 in words is "five hundred two million, fifty-six thousand, eight hundred sixty-six".