55900042 has 16 divisors (see below), whose sum is σ = 92728512. Its totient is φ = 25060320.

The previous prime is 55899997. The next prime is 55900069. The reversal of 55900042 is 24000955.

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, 15798 + ... + 19009.

It is an arithmetic number, because the mean of its divisors is an integer number (5795532).

Almost surely, 2^55900042 is an apocalyptic number.

55900042 is a deficient number, since it is larger than the sum of its proper divisors (36828470).

55900042 is a wasteful number, since it uses less digits than its factorization.

55900042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34893.

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 55900042 is about 7476.6330657589. The cubic root of 55900042 is about 382.3584667242.

Adding to 55900042 its reverse (24000955), we get a palindrome (79900997).

The spelling of 55900042 in words is "fifty-five million, nine hundred thousand, forty-two".