55001442 has 16 divisors (see below), whose sum is σ = 110129760. Its totient is φ = 18312672.

The previous prime is 55001431. The next prime is 55001473. The reversal of 55001442 is 24410055.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 909 + ... + 10527.

It is an arithmetic number, because the mean of its divisors is an integer number (6883110).

Almost surely, 2^55001442 is an apocalyptic number.

55001442 is an abundant number, since it is smaller than the sum of its proper divisors (55128318).

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

55001442 is a wasteful number, since it uses less digits than its factorization.

55001442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10577.

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 55001442 is about 7416.2957060786. The cubic root of 55001442 is about 380.2985695971.

Adding to 55001442 its reverse (24410055), we get a palindrome (79411497).

The spelling of 55001442 in words is "fifty-five million, one thousand, four hundred forty-two".