3221553540 has 24 divisors (see below), whose sum is σ = 9020350080. Its totient is φ = 859080928.

The previous prime is 3221553529. The next prime is 3221553547. The reversal of 3221553540 is 453551223.

It is a super-2 number, since 2×3221553540² = 20756814422173063200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 3221553498 and 3221553507.

It is not an unprimeable number, because it can be changed into a prime (3221553547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26846220 + ... + 26846339.

It is an arithmetic number, because the mean of its divisors is an integer number (375847920).

Almost surely, 2^3221553540 is an apocalyptic number.

3221553540 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3221553540 is an abundant number, since it is smaller than the sum of its proper divisors (5798796540).

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

3221553540 is a wasteful number, since it uses less digits than its factorization.

3221553540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53692571 (or 53692569 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 30.

The square root of 3221553540 is about 56758.7309583292. The cubic root of 3221553540 is about 1476.9136956995.

The spelling of 3221553540 in words is "three billion, two hundred twenty-one million, five hundred fifty-three thousand, five hundred forty".