6551942 has 4 divisors (see below), whose sum is σ = 9827916. Its totient is φ = 3275970.

The previous prime is 6551921. The next prime is 6551947. The reversal of 6551942 is 2491556.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 6551899 and 6551908.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6551947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1637984 + ... + 1637987.

It is an arithmetic number, because the mean of its divisors is an integer number (2456979).

Almost surely, 2^6551942 is an apocalyptic number.

6551942 is a deficient number, since it is larger than the sum of its proper divisors (3275974).

6551942 is a wasteful number, since it uses less digits than its factorization.

6551942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3275973.

The product of its digits is 10800, while the sum is 32.

The square root of 6551942 is about 2559.6761513910. The cubic root of 6551942 is about 187.1213525949.

The spelling of 6551942 in words is "six million, five hundred fifty-one thousand, nine hundred forty-two".