1521503130 has 64 divisors (see below), whose sum is σ = 4354725888. Its totient is φ = 332650560.

The previous prime is 1521503117. The next prime is 1521503161. The reversal of 1521503130 is 313051251.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 1521503097 and 1521503106.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 152676 + ... + 162335.

It is an arithmetic number, because the mean of its divisors is an integer number (68042592).

Almost surely, 2^1521503130 is an apocalyptic number.

1521503130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1521503130 is an abundant number, since it is smaller than the sum of its proper divisors (2833222758).

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

1521503130 is a wasteful number, since it uses less digits than its factorization.

1521503130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 315051.

The product of its (nonzero) digits is 450, while the sum is 21.

The square root of 1521503130 is about 39006.4498512746. The cubic root of 1521503130 is about 1150.1582970501.

Adding to 1521503130 its reverse (313051251), we get a palindrome (1834554381).

The spelling of 1521503130 in words is "one billion, five hundred twenty-one million, five hundred three thousand, one hundred thirty".