6221503145 has 16 divisors (see below), whose sum is σ = 8771015232. Its totient is φ = 4176672960.

The previous prime is 6221503111. The next prime is 6221503157. The reversal of 6221503145 is 5413051226.

It is not a de Polignac number, because 6221503145 - 2¹⁶ = 6221437609 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

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, 4349987 + ... + 4351416.

It is an arithmetic number, because the mean of its divisors is an integer number (548188452).

Almost surely, 2^6221503145 is an apocalyptic number.

6221503145 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

6221503145 is a deficient number, since it is larger than the sum of its proper divisors (2549512087).

6221503145 is a wasteful number, since it uses less digits than its factorization.

6221503145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8701432.

The product of its (nonzero) digits is 7200, while the sum is 29.

The square root of 6221503145 is about 78876.5056591632. The cubic root of 6221503145 is about 1839.2119286840.

The spelling of 6221503145 in words is "six billion, two hundred twenty-one million, five hundred three thousand, one hundred forty-five".