55811042 has 8 divisors (see below), whose sum is σ = 95676096. Its totient is φ = 23919012.

The previous prime is 55811029. The next prime is 55811047. The reversal of 55811042 is 24011855.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×55811042² = 6229744818251528, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (55811047) 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, 1993238 + ... + 1993265.

It is an arithmetic number, because the mean of its divisors is an integer number (11959512).

Almost surely, 2^55811042 is an apocalyptic number.

55811042 is a deficient number, since it is larger than the sum of its proper divisors (39865054).

55811042 is a wasteful number, since it uses less digits than its factorization.

55811042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3986512.

The product of its (nonzero) digits is 1600, while the sum is 26.

The square root of 55811042 is about 7470.6788178853. The cubic root of 55811042 is about 382.1554377801.

Adding to 55811042 its reverse (24011855), we get a palindrome (79822897).

The spelling of 55811042 in words is "fifty-five million, eight hundred eleven thousand, forty-two".