503928361 has 4 divisors (see below), whose sum is σ = 503974224. Its totient is φ = 503882500.

The previous prime is 503928353. The next prime is 503928379. The reversal of 503928361 is 163829305.

It is the 9165-th star number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 503928361 - 2³ = 503928353 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 503928361.

It is not an unprimeable number, because it can be changed into a prime (503925361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4446 + ... + 32056.

It is an arithmetic number, because the mean of its divisors is an integer number (125993556).

Almost surely, 2^503928361 is an apocalyptic number.

It is an amenable number.

503928361 is a deficient number, since it is larger than the sum of its proper divisors (45863).

503928361 is a wasteful number, since it uses less digits than its factorization.

503928361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45862.

The product of its (nonzero) digits is 38880, while the sum is 37.

The square root of 503928361 is about 22448.3487365998. The cubic root of 503928361 is about 795.7737340149.

The spelling of 503928361 in words is "five hundred three million, nine hundred twenty-eight thousand, three hundred sixty-one".