503040857 has 8 divisors (see below), whose sum is σ = 553629600. Its totient is φ = 453261760.

The previous prime is 503040841. The next prime is 503040869. The reversal of 503040857 is 758040305.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 503040857 - 2⁴ = 503040841 is a prime.

It is a super-2 number, since 2×503040857² = 506100207622588898, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (503040887) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 201107 + ... + 203592.

It is an arithmetic number, because the mean of its divisors is an integer number (69203700).

Almost surely, 2^503040857 is an apocalyptic number.

It is an amenable number.

503040857 is a deficient number, since it is larger than the sum of its proper divisors (50588743).

503040857 is a wasteful number, since it uses less digits than its factorization.

503040857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 404823.

The product of its (nonzero) digits is 16800, while the sum is 32.

The square root of 503040857 is about 22428.5723353048. The cubic root of 503040857 is about 795.3062949613.

The spelling of 503040857 in words is "five hundred three million, forty thousand, eight hundred fifty-seven".