55410820 has 24 divisors (see below), whose sum is σ = 123208344. Its totient is φ = 20860416.

The previous prime is 55410779. The next prime is 55410827. The reversal of 55410820 is 2801455.

It can be written as a sum of positive squares in 4 ways, for example, as 26873856 + 28536964 = 5184^2 + 5342^2 .

It is not an unprimeable number, because it can be changed into a prime (55410827) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81147 + ... + 81826.

It is an arithmetic number, because the mean of its divisors is an integer number (5133681).

Almost surely, 2^55410820 is an apocalyptic number.

It is an amenable number.

55410820 is an abundant number, since it is smaller than the sum of its proper divisors (67797524).

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

55410820 is a wasteful number, since it uses less digits than its factorization.

55410820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162999 (or 162997 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 25.

The square root of 55410820 is about 7443.8444368485. The cubic root of 55410820 is about 381.2397643046.

The spelling of 55410820 in words is "fifty-five million, four hundred ten thousand, eight hundred twenty".