55810811 has 8 divisors (see below), whose sum is σ = 66557184. Its totient is φ = 45757800.

The previous prime is 55810789. The next prime is 55810823. The reversal of 55810811 is 11801855.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 55810811 - 2⁶ = 55810747 is a prime.

It is a super-2 number, since 2×55810811² = 6229693248955442, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55810841) 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 7 ways as a sum of consecutive naturals, for example, 173165 + ... + 173486.

It is an arithmetic number, because the mean of its divisors is an integer number (8319648).

Almost surely, 2^55810811 is an apocalyptic number.

55810811 is a deficient number, since it is larger than the sum of its proper divisors (10746373).

55810811 is a wasteful number, since it uses less digits than its factorization.

55810811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 346681.

The product of its (nonzero) digits is 1600, while the sum is 29.

The square root of 55810811 is about 7470.6633574268. The cubic root of 55810811 is about 382.1549105365.

The spelling of 55810811 in words is "fifty-five million, eight hundred ten thousand, eight hundred eleven".