55544142 has 32 divisors (see below), whose sum is σ = 113117184. Its totient is φ = 18180000.

The previous prime is 55544129. The next prime is 55544147. The reversal of 55544142 is 24144555.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55544147) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 91203 + ... + 91809.

It is an arithmetic number, because the mean of its divisors is an integer number (3534912).

Almost surely, 2^55544142 is an apocalyptic number.

55544142 is an abundant number, since it is smaller than the sum of its proper divisors (57573042).

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

55544142 is a wasteful number, since it uses less digits than its factorization.

55544142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 864.

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

The square root of 55544142 is about 7452.7942410884. The cubic root of 55544142 is about 381.5452818756.

Adding to 55544142 its reverse (24144555), we get a palindrome (79688697).

The spelling of 55544142 in words is "fifty-five million, five hundred forty-four thousand, one hundred forty-two".