1521130 has 16 divisors (see below), whose sum is σ = 2948904. Its totient is φ = 561600.

The previous prime is 1521119. The next prime is 1521133. The reversal of 1521130 is 311251.

It can be written as a sum of positive squares in 4 ways, for example, as 1159929 + 361201 = 1077^2 + 601^2 .

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a self number, because there is not a number n which added to its sum of digits gives 1521130.

It is not an unprimeable number, because it can be changed into a prime (1521133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5721 + ... + 5980.

2^1521130 is an apocalyptic number.

1521130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1521130 is a deficient number, since it is larger than the sum of its proper divisors (1427774).

1521130 is a wasteful number, since it uses less digits than its factorization.

1521130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11721.

The product of its (nonzero) digits is 30, while the sum is 13.

The square root of 1521130 is about 1233.3409909672. The cubic root of 1521130 is about 115.0064268620.

Adding to 1521130 its reverse (311251), we get a palindrome (1832381).

The spelling of 1521130 in words is "one million, five hundred twenty-one thousand, one hundred thirty".