55081001 has 8 divisors (see below), whose sum is σ = 55770624. Its totient is φ = 54394560.

The previous prime is 55080989. The next prime is 55081007. The reversal of 55081001 is 10018055.

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

It is a cyclic number.

It is not a de Polignac number, because 55081001 - 2¹⁰ = 55079977 is a prime.

It is a super-3 number, since 3×55081001³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55081007) by changing a digit.

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, 62081 + ... + 62961.

It is an arithmetic number, because the mean of its divisors is an integer number (6971328).

Almost surely, 2^55081001 is an apocalyptic number.

It is an amenable number.

55081001 is a deficient number, since it is larger than the sum of its proper divisors (689623).

55081001 is a wasteful number, since it uses less digits than its factorization.

55081001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1591.

The product of its (nonzero) digits is 200, while the sum is 20.

The square root of 55081001 is about 7421.6575641834. The cubic root of 55081001 is about 380.4818471991.

Adding to 55081001 its reverse (10018055), we get a palindrome (65099056).

The spelling of 55081001 in words is "fifty-five million, eighty-one thousand, one".