55040801 has 4 divisors (see below), whose sum is σ = 55737600. Its totient is φ = 54344004.

The previous prime is 55040773. The next prime is 55040879. The reversal of 55040801 is 10804055.

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 a de Polignac number, because none of the positive numbers 2^k-55040801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55040501) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 348281 + ... + 348438.

It is an arithmetic number, because the mean of its divisors is an integer number (13934400).

Almost surely, 2^55040801 is an apocalyptic number.

It is an amenable number.

55040801 is a deficient number, since it is larger than the sum of its proper divisors (696799).

55040801 is an equidigital number, since it uses as much as digits as its factorization.

55040801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 696798.

The product of its (nonzero) digits is 800, while the sum is 23.

The square root of 55040801 is about 7418.9487799822. The cubic root of 55040801 is about 380.3892617794.

Adding to 55040801 its reverse (10804055), we get a palindrome (65844856).

The spelling of 55040801 in words is "fifty-five million, forty thousand, eight hundred one".