1245651056 has 40 divisors (see below), whose sum is σ = 2603739600. Its totient is φ = 573889536.

The previous prime is 1245651041. The next prime is 1245651067. The reversal of 1245651056 is 6501565421.

It is a congruent number.

It is an unprimeable number.

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, 118295 + ... + 128393.

It is an arithmetic number, because the mean of its divisors is an integer number (65093490).

Almost surely, 2^1245651056 is an apocalyptic number.

1245651056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1245651056 is an abundant number, since it is smaller than the sum of its proper divisors (1358088544).

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

1245651056 is a wasteful number, since it uses less digits than its factorization.

1245651056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10713 (or 10707 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 35.

The square root of 1245651056 is about 35293.7821152678. The cubic root of 1245651056 is about 1075.9666246333.

The spelling of 1245651056 in words is "one billion, two hundred forty-five million, six hundred fifty-one thousand, fifty-six".