1245553312 has 24 divisors (see below), whose sum is σ = 2455530336. Its totient is φ = 621926592.

The previous prime is 1245553291. The next prime is 1245553319. The reversal of 1245553312 is 2133555421.

It is not an unprimeable number, because it can be changed into a prime (1245553319) 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 3 ways as a sum of consecutive naturals, for example, 2418 + ... + 49969.

It is an arithmetic number, because the mean of its divisors is an integer number (102313764).

Almost surely, 2^1245553312 is an apocalyptic number.

It is an amenable number.

1245553312 is a deficient number, since it is larger than the sum of its proper divisors (1209977024).

1245553312 is an equidigital number, since it uses as much as digits as its factorization.

1245553312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53140 (or 53132 counting only the distinct ones).

The product of its digits is 18000, while the sum is 31.

The square root of 1245553312 is about 35292.3973682718. The cubic root of 1245553312 is about 1075.9384808413.

The spelling of 1245553312 in words is "one billion, two hundred forty-five million, five hundred fifty-three thousand, three hundred twelve".