502054681 has 4 divisors (see below), whose sum is σ = 503345700. Its totient is φ = 500763664.

The previous prime is 502054673. The next prime is 502054747. The reversal of 502054681 is 186450205.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 186450205 = 5 ⋅37290041.

It can be written as a sum of positive squares in 2 ways, for example, as 98406400 + 403648281 = 9920^2 + 20091^2 .

It is a cyclic number.

It is not a de Polignac number, because 502054681 - 2³ = 502054673 is a prime.

It is a super-2 number, since 2×502054681² = 504117805428023522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (502024681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 644926 + ... + 645703.

It is an arithmetic number, because the mean of its divisors is an integer number (125836425).

Almost surely, 2^502054681 is an apocalyptic number.

It is an amenable number.

502054681 is a deficient number, since it is larger than the sum of its proper divisors (1291019).

502054681 is a wasteful number, since it uses less digits than its factorization.

502054681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1291018.

The product of its (nonzero) digits is 9600, while the sum is 31.

The square root of 502054681 is about 22406.5767354141. The cubic root of 502054681 is about 794.7862410676.

The spelling of 502054681 in words is "five hundred two million, fifty-four thousand, six hundred eighty-one".