6221157 has 4 divisors (see below), whose sum is σ = 8294880. Its totient is φ = 4147436.

The previous prime is 6221153. The next prime is 6221161. The reversal of 6221157 is 7511226.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (6221153) and next prime (6221161).

It is a cyclic number.

It is not a de Polignac number, because 6221157 - 2² = 6221153 is a prime.

It is a D-number.

It is a congruent number.

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 in 3 ways as a sum of consecutive naturals, for example, 1036857 + ... + 1036862.

It is an arithmetic number, because the mean of its divisors is an integer number (2073720).

Almost surely, 2^6221157 is an apocalyptic number.

It is an amenable number.

6221157 is a deficient number, since it is larger than the sum of its proper divisors (2073723).

6221157 is a wasteful number, since it uses less digits than its factorization.

6221157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2073722.

The product of its digits is 840, while the sum is 24.

The square root of 6221157 is about 2494.2247292496. The cubic root of 6221157 is about 183.9177818716.

The spelling of 6221157 in words is "six million, two hundred twenty-one thousand, one hundred fifty-seven".