6221156 has 6 divisors (see below), whose sum is σ = 10887030. Its totient is φ = 3110576.

The previous prime is 6221153. The next prime is 6221161. The reversal of 6221156 is 6511226.

It can be written as a sum of positive squares in only one way, i.e., 6150400 + 70756 = 2480^2 + 266^2 .

It is not an unprimeable number, because it can be changed into a prime (6221153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 777641 + ... + 777648.

It is an arithmetic number, because the mean of its divisors is an integer number (1814505).

Almost surely, 2^6221156 is an apocalyptic number.

It is an amenable number.

6221156 is a deficient number, since it is larger than the sum of its proper divisors (4665874).

6221156 is a wasteful number, since it uses less digits than its factorization.

6221156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1555293 (or 1555291 counting only the distinct ones).

The product of its digits is 720, while the sum is 23.

The square root of 6221156 is about 2494.2245287865. The cubic root of 6221156 is about 183.9177720172.

The spelling of 6221156 in words is "six million, two hundred twenty-one thousand, one hundred fifty-six".