1145232520 has 16 divisors (see below), whose sum is σ = 2576773260. Its totient is φ = 458092992.

The previous prime is 1145232499. The next prime is 1145232577. The reversal of 1145232520 is 252325411.

It can be written as a sum of positive squares in 2 ways, for example, as 1136903524 + 8328996 = 33718^2 + 2886^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14315367 + ... + 14315446.

Almost surely, 2^1145232520 is an apocalyptic number.

1145232520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1145232520 is an abundant number, since it is smaller than the sum of its proper divisors (1431540740).

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

1145232520 is a wasteful number, since it uses less digits than its factorization.

1145232520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28630824 (or 28630820 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 1145232520 is about 33841.2842545906. The cubic root of 1145232520 is about 1046.2397684785.

Adding to 1145232520 its reverse (252325411), we get a palindrome (1397557931).

The spelling of 1145232520 in words is "one billion, one hundred forty-five million, two hundred thirty-two thousand, five hundred twenty".