1533665056 has 96 divisors (see below), whose sum is σ = 3801627648. Its totient is φ = 591632640.

The previous prime is 1533665053. The next prime is 1533665071. The reversal of 1533665056 is 6505663351.

It is not an unprimeable number, because it can be changed into a prime (1533665051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 250771 + ... + 256813.

It is an arithmetic number, because the mean of its divisors is an integer number (39600288).

Almost surely, 2^1533665056 is an apocalyptic number.

1533665056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1533665056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1900813824).

1533665056 is an abundant number, since it is smaller than the sum of its proper divisors (2267962592).

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

1533665056 is a wasteful number, since it uses less digits than its factorization.

1533665056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6174 (or 6166 counting only the distinct ones).

The product of its (nonzero) digits is 243000, while the sum is 40.

The square root of 1533665056 is about 39162.0359021336. The cubic root of 1533665056 is about 1153.2147118321.

The spelling of 1533665056 in words is "one billion, five hundred thirty-three million, six hundred sixty-five thousand, fifty-six".