55807873 has 4 divisors (see below), whose sum is σ = 60881328. Its totient is φ = 50734420.

The previous prime is 55807841. The next prime is 55807879. The reversal of 55807873 is 37870855.

55807873 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 55807873 - 2⁵ = 55807841 is a prime.

It is a super-2 number, since 2×55807873² = 6229037377568258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55807879) 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, 2536711 + ... + 2536732.

It is an arithmetic number, because the mean of its divisors is an integer number (15220332).

Almost surely, 2^55807873 is an apocalyptic number.

It is an amenable number.

55807873 is a deficient number, since it is larger than the sum of its proper divisors (5073455).

55807873 is a wasteful number, since it uses less digits than its factorization.

55807873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5073454.

The product of its (nonzero) digits is 235200, while the sum is 43.

The square root of 55807873 is about 7470.4667190210. The cubic root of 55807873 is about 382.1482046026.

The spelling of 55807873 in words is "fifty-five million, eight hundred seven thousand, eight hundred seventy-three".