55810830 has 32 divisors (see below), whose sum is σ = 141826464. Its totient is φ = 14007296.

The previous prime is 55810829. The next prime is 55810841. The reversal of 55810830 is 3801855.

It is a happy number.

It is a super-2 number, since 2×55810830² = 6229697490577800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54207 + ... + 55226.

It is an arithmetic number, because the mean of its divisors is an integer number (4432077).

Almost surely, 2^55810830 is an apocalyptic number.

55810830 is an abundant number, since it is smaller than the sum of its proper divisors (86015634).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55810830 is a wasteful number, since it uses less digits than its factorization.

55810830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109460.

The product of its (nonzero) digits is 4800, while the sum is 30.

The square root of 55810830 is about 7470.6646290675. The cubic root of 55810830 is about 382.1549539030.

The spelling of 55810830 in words is "fifty-five million, eight hundred ten thousand, eight hundred thirty".