1003252520 has 32 divisors (see below), whose sum is σ = 2295583200. Its totient is φ = 394498368.

The previous prime is 1003252519. The next prime is 1003252531. The reversal of 1003252520 is 252523001.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 1003252492 and 1003252501.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 210194 + ... + 214913.

It is an arithmetic number, because the mean of its divisors is an integer number (71736975).

Almost surely, 2^1003252520 is an apocalyptic number.

1003252520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1003252520 is an abundant number, since it is smaller than the sum of its proper divisors (1292330680).

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

1003252520 is a wasteful number, since it uses less digits than its factorization.

1003252520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 425177 (or 425173 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 1003252520 is about 31674.1617095070. The cubic root of 1003252520 is about 1001.0830000209.

Adding to 1003252520 its reverse (252523001), we get a palindrome (1255775521).

The spelling of 1003252520 in words is "one billion, three million, two hundred fifty-two thousand, five hundred twenty".