55443542 has 16 divisors (see below), whose sum is σ = 103686912. Its totient is φ = 21601320.

The previous prime is 55443533. The next prime is 55443569. The reversal of 55443542 is 24534455.

It is a junction number, because it is equal to n+sod(n) for n = 55443499 and 55443508.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 179858 + ... + 180165.

It is an arithmetic number, because the mean of its divisors is an integer number (6480432).

Almost surely, 2^55443542 is an apocalyptic number.

55443542 is a deficient number, since it is larger than the sum of its proper divisors (48243370).

55443542 is a wasteful number, since it uses less digits than its factorization.

55443542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 360043.

The product of its digits is 48000, while the sum is 32.

The square root of 55443542 is about 7446.0420358738. The cubic root of 55443542 is about 381.3147946131.

Adding to 55443542 its reverse (24534455), we get a palindrome (79977997).

The spelling of 55443542 in words is "fifty-five million, four hundred forty-three thousand, five hundred forty-two".