55643042 has 32 divisors (see below), whose sum is σ = 105514752. Its totient is φ = 21415104.

The previous prime is 55643033. The next prime is 55643051. The reversal of 55643042 is 24034655.

It is an interprime number because it is at equal distance from previous prime (55643033) and next prime (55643051).

It is a super-2 number, since 2×55643042² = 6192296246027528, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 55642996 and 55643014.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2603 + ... + 10865.

It is an arithmetic number, because the mean of its divisors is an integer number (3297336).

Almost surely, 2^55643042 is an apocalyptic number.

55643042 is a deficient number, since it is larger than the sum of its proper divisors (49871710).

55643042 is a wasteful number, since it uses less digits than its factorization.

55643042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8322.

The product of its (nonzero) digits is 14400, while the sum is 29.

The square root of 55643042 is about 7459.4263854535. The cubic root of 55643042 is about 381.7716030963.

Adding to 55643042 its reverse (24034655), we get a palindrome (79677697).

The spelling of 55643042 in words is "fifty-five million, six hundred forty-three thousand, forty-two".