6221545 has 32 divisors (see below), whose sum is σ = 8709120. Its totient is φ = 4224000.

The previous prime is 6221543. The next prime is 6221549. The reversal of 6221545 is 5451226.

It is not a de Polignac number, because 6221545 - 2¹ = 6221543 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6221543) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 69861 + ... + 69949.

It is an arithmetic number, because the mean of its divisors is an integer number (272160).

Almost surely, 2^6221545 is an apocalyptic number.

It is an amenable number.

6221545 is a deficient number, since it is larger than the sum of its proper divisors (2487575).

6221545 is a wasteful number, since it uses less digits than its factorization.

6221545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177.

The product of its digits is 2400, while the sum is 25.

The square root of 6221545 is about 2494.3025077163. The cubic root of 6221545 is about 183.9216053092.

The spelling of 6221545 in words is "six million, two hundred twenty-one thousand, five hundred forty-five".