55819001 has 4 divisors (see below), whose sum is σ = 63793152. Its totient is φ = 47844852.

The previous prime is 55818991. The next prime is 55819037. The reversal of 55819001 is 10091855.

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 a cyclic number.

It is not a de Polignac number, because 55819001 - 2⁶ = 55818937 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (55819061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3987065 + ... + 3987078.

It is an arithmetic number, because the mean of its divisors is an integer number (15948288).

Almost surely, 2^55819001 is an apocalyptic number.

It is an amenable number.

55819001 is a deficient number, since it is larger than the sum of its proper divisors (7974151).

55819001 is an equidigital number, since it uses as much as digits as its factorization.

55819001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7974150.

The product of its (nonzero) digits is 1800, while the sum is 29.

The square root of 55819001 is about 7471.2114814132. The cubic root of 55819001 is about 382.1736028268.

The spelling of 55819001 in words is "fifty-five million, eight hundred nineteen thousand, one".