502907381 has 4 divisors (see below), whose sum is σ = 507886764. Its totient is φ = 497928000.

The previous prime is 502907341. The next prime is 502907387. The reversal of 502907381 is 183709205.

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

It can be written as a sum of positive squares in 2 ways, for example, as 287845156 + 215062225 = 16966^2 + 14665^2 .

It is a cyclic number.

It is not a de Polignac number, because 502907381 - 2¹⁸ = 502645237 is a prime.

It is a super-2 number, since 2×502907381² = 505831667728558322, which 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 (502907387) 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, 2489540 + ... + 2489741.

It is an arithmetic number, because the mean of its divisors is an integer number (126971691).

Almost surely, 2^502907381 is an apocalyptic number.

It is an amenable number.

502907381 is a deficient number, since it is larger than the sum of its proper divisors (4979383).

502907381 is a wasteful number, since it uses less digits than its factorization.

502907381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4979382.

The product of its (nonzero) digits is 15120, while the sum is 35.

The square root of 502907381 is about 22425.5965583973. The cubic root of 502907381 is about 795.2359470019.

The spelling of 502907381 in words is "five hundred two million, nine hundred seven thousand, three hundred eighty-one".