55112142 has 16 divisors (see below), whose sum is σ = 110299392. Its totient is φ = 18358200.

The previous prime is 55112137. The next prime is 55112143. The reversal of 55112142 is 24121155.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55112143) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12153 + ... + 16059.

It is an arithmetic number, because the mean of its divisors is an integer number (6893712).

Almost surely, 2^55112142 is an apocalyptic number.

55112142 is an abundant number, since it is smaller than the sum of its proper divisors (55187250).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55112142 is a wasteful number, since it uses less digits than its factorization.

55112142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6263.

The product of its digits is 400, while the sum is 21.

The square root of 55112142 is about 7423.7552491983. The cubic root of 55112142 is about 380.5535376959.

Adding to 55112142 its reverse (24121155), we get a palindrome (79233297).

The spelling of 55112142 in words is "fifty-five million, one hundred twelve thousand, one hundred forty-two".