503220465 has 64 divisors (see below), whose sum is σ = 985374720. Its totient is φ = 241629120.

The previous prime is 503220457. The next prime is 503220469. The reversal of 503220465 is 564022305.

It is not a de Polignac number, because 503220465 - 2³ = 503220457 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (503220469) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 157312 + ... + 160478.

It is an arithmetic number, because the mean of its divisors is an integer number (15396480).

Almost surely, 2^503220465 is an apocalyptic number.

503220465 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

503220465 is a deficient number, since it is larger than the sum of its proper divisors (482154255).

503220465 is a wasteful number, since it uses less digits than its factorization.

503220465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3299 (or 3293 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

The square root of 503220465 is about 22432.5759778051. The cubic root of 503220465 is about 795.4009369596.

The spelling of 503220465 in words is "five hundred three million, two hundred twenty thousand, four hundred sixty-five".