503645140 has 24 divisors (see below), whose sum is σ = 1063571040. Its totient is φ = 200331168.

The previous prime is 503645119. The next prime is 503645143. The reversal of 503645140 is 41546305.

It is a junction number, because it is equal to n+sod(n) for n = 503645099 and 503645108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (503645143) 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, 66762 + ... + 73921.

It is an arithmetic number, because the mean of its divisors is an integer number (44315460).

Almost surely, 2^503645140 is an apocalyptic number.

It is an amenable number.

503645140 is an abundant number, since it is smaller than the sum of its proper divisors (559925900).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

503645140 is a wasteful number, since it uses less digits than its factorization.

503645140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140871 (or 140869 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 503645140 is about 22442.0395686310. The cubic root of 503645140 is about 795.6246241503.

It can be divided in two parts, 5036 and 45140, that added together give a square (50176 = 224²).

The spelling of 503645140 in words is "five hundred three million, six hundred forty-five thousand, one hundred forty".