6221542 has 4 divisors (see below), whose sum is σ = 9332316. Its totient is φ = 3110770.

The previous prime is 6221539. The next prime is 6221543. The reversal of 6221542 is 2451226.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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 as a sum of consecutive naturals, namely, 1555384 + ... + 1555387.

It is an arithmetic number, because the mean of its divisors is an integer number (2333079).

Almost surely, 2^6221542 is an apocalyptic number.

6221542 is a deficient number, since it is larger than the sum of its proper divisors (3110774).

6221542 is a wasteful number, since it uses less digits than its factorization.

6221542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3110773.

The product of its digits is 960, while the sum is 22.

The square root of 6221542 is about 2494.3019063457. The cubic root of 6221542 is about 183.9215757471.

Adding to 6221542 its reverse (2451226), we get a palindrome (8672768).

The spelling of 6221542 in words is "six million, two hundred twenty-one thousand, five hundred forty-two".