55445142 has 8 divisors (see below), whose sum is σ = 110890296. Its totient is φ = 18481712.

The previous prime is 55445141. The next prime is 55445167. The reversal of 55445142 is 24154455.

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

55445142 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55445141) 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, 4620423 + ... + 4620434.

It is an arithmetic number, because the mean of its divisors is an integer number (13861287).

Almost surely, 2^55445142 is an apocalyptic number.

55445142 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

55445142 is a wasteful number, since it uses less digits than its factorization.

55445142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9240862.

The product of its digits is 16000, while the sum is 30.

The square root of 55445142 is about 7446.1494747285. The cubic root of 55445142 is about 381.3184625954.

Adding to 55445142 its reverse (24154455), we get a palindrome (79599597).

The spelling of 55445142 in words is "fifty-five million, four hundred forty-five thousand, one hundred forty-two".