503245531 has 4 divisors (see below), whose sum is σ = 504559872. Its totient is φ = 501931192.

The previous prime is 503245511. The next prime is 503245549. The reversal of 503245531 is 135542305.

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

It is a cyclic number.

It is not a de Polignac number, because 503245531 - 2¹¹ = 503243483 is a prime.

It is a super-2 number, since 2×503245531² = 506512128942943922, which contains 22 as substring.

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 503245531.

It is not an unprimeable number, because it can be changed into a prime (503245511) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 656596 + ... + 657361.

It is an arithmetic number, because the mean of its divisors is an integer number (126139968).

Almost surely, 2^503245531 is an apocalyptic number.

503245531 is a deficient number, since it is larger than the sum of its proper divisors (1314341).

503245531 is a wasteful number, since it uses less digits than its factorization.

503245531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1314340.

The product of its (nonzero) digits is 9000, while the sum is 28.

The square root of 503245531 is about 22433.1346672729. The cubic root of 503245531 is about 795.4141433574.

Adding to 503245531 its reverse (135542305), we get a palindrome (638787836).

It can be divided in two parts, 50324 and 5531, that added together give a palindrome (55855).

The spelling of 503245531 in words is "five hundred three million, two hundred forty-five thousand, five hundred thirty-one".