6221520456 has 32 divisors (see below), whose sum is σ = 15555809760. Its totient is φ = 2073572352.

The previous prime is 6221520451. The next prime is 6221520467. The reversal of 6221520456 is 6540251226.

It is not an unprimeable number, because it can be changed into a prime (6221520451) 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 7 ways as a sum of consecutive naturals, for example, 281256 + ... + 302568.

It is an arithmetic number, because the mean of its divisors is an integer number (486119055).

Almost surely, 2^6221520456 is an apocalyptic number.

It is an amenable number.

6221520456 is an abundant number, since it is smaller than the sum of its proper divisors (9334289304).

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

6221520456 is a wasteful number, since it uses less digits than its factorization.

6221520456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33485 (or 33481 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 33.

The square root of 6221520456 is about 78876.6153939176. The cubic root of 6221520456 is about 1839.2136345188.

The spelling of 6221520456 in words is "six billion, two hundred twenty-one million, five hundred twenty thousand, four hundred fifty-six".