55140001 has 4 divisors (see below), whose sum is σ = 63017152. Its totient is φ = 47262852.

The previous prime is 55139969. The next prime is 55140011. The reversal of 55140001 is 10004155.

It is a happy number.

55140001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 55140001 - 2⁵ = 55139969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55140011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3938565 + ... + 3938578.

It is an arithmetic number, because the mean of its divisors is an integer number (15754288).

Almost surely, 2^55140001 is an apocalyptic number.

It is an amenable number.

55140001 is a deficient number, since it is larger than the sum of its proper divisors (7877151).

55140001 is an equidigital number, since it uses as much as digits as its factorization.

55140001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7877150.

The product of its (nonzero) digits is 100, while the sum is 16.

The square root of 55140001 is about 7425.6313536291. The cubic root of 55140001 is about 380.6176497332.

Adding to 55140001 its reverse (10004155), we get a palindrome (65144156).

The spelling of 55140001 in words is "fifty-five million, one hundred forty thousand, one".