55810 has 8 divisors (see below), whose sum is σ = 100476. Its totient is φ = 22320.

The previous prime is 55807. The next prime is 55813. The reversal of 55810 is 1855.

It is an interprime number because it is at equal distance from previous prime (55807) and next prime (55813).

It can be written as a sum of positive squares in 2 ways, for example, as 54289 + 1521 = 233^2 + 39^2 .

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

It is a super-2 number, since 2×55810² = 6229512200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (55813) 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, 2781 + ... + 2800.

2⁵⁵⁸¹⁰ is an apocalyptic number.

55810 is a deficient number, since it is larger than the sum of its proper divisors (44666).

55810 is a wasteful number, since it uses less digits than its factorization.

55810 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5588.

The product of its (nonzero) digits is 200, while the sum is 19.

The square root of 55810 is about 236.2414019599. The cubic root of 55810 is about 38.2153059467.

The spelling of 55810 in words is "fifty-five thousand, eight hundred ten".