1045503220 has 24 divisors (see below), whose sum is σ = 2202203808. Its totient is φ = 416935200.

The previous prime is 1045503163. The next prime is 1045503227. The reversal of 1045503220 is 223055401.

It is a junction number, because it is equal to n+sod(n) for n = 1045503191 and 1045503200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1045503227) 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, 72346 + ... + 85585.

It is an arithmetic number, because the mean of its divisors is an integer number (91758492).

Almost surely, 2^1045503220 is an apocalyptic number.

1045503220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1045503220 is an abundant number, since it is smaller than the sum of its proper divisors (1156700588).

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

1045503220 is a wasteful number, since it uses less digits than its factorization.

1045503220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158271 (or 158269 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 1045503220 is about 32334.2422209026. The cubic root of 1045503220 is about 1014.9433247492.

Adding to 1045503220 its reverse (223055401), we get a palindrome (1268558621).

The spelling of 1045503220 in words is "one billion, forty-five million, five hundred three thousand, two hundred twenty".