55809467 has 4 divisors (see below), whose sum is σ = 63782256. Its totient is φ = 47836680.

The previous prime is 55809451. The next prime is 55809491. The reversal of 55809467 is 76490855.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 55809467 - 2⁴ = 55809451 is a prime.

It is a super-2 number, since 2×55809467² = 6229393213648178, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55809437) 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, 3986384 + ... + 3986397.

It is an arithmetic number, because the mean of its divisors is an integer number (15945564).

Almost surely, 2^55809467 is an apocalyptic number.

55809467 is a deficient number, since it is larger than the sum of its proper divisors (7972789).

55809467 is an equidigital number, since it uses as much as digits as its factorization.

55809467 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7972788.

The product of its (nonzero) digits is 302400, while the sum is 44.

The square root of 55809467 is about 7470.5734050339. The cubic root of 55809467 is about 382.1518429091.

The spelling of 55809467 in words is "fifty-five million, eight hundred nine thousand, four hundred sixty-seven".