55810004 has 12 divisors (see below), whose sum is σ = 97743828. Its totient is φ = 27883200.

The previous prime is 55809991. The next prime is 55810021. The reversal of 55810004 is 40001855.

It can be written as a sum of positive squares in 2 ways, for example, as 20976400 + 34833604 = 4580^2 + 5902^2 .

It is a super-2 number, since 2×55810004² = 6229513092960032, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1214 + ... + 10634.

It is an arithmetic number, because the mean of its divisors is an integer number (8145319).

Almost surely, 2^55810004 is an apocalyptic number.

It is an amenable number.

55810004 is a deficient number, since it is larger than the sum of its proper divisors (41933824).

55810004 is a wasteful number, since it uses less digits than its factorization.

55810004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10906 (or 10904 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 23.

The square root of 55810004 is about 7470.6093459637. The cubic root of 55810004 is about 382.1530685965.

Adding to 55810004 its reverse (40001855), we get a palindrome (95811859).

The spelling of 55810004 in words is "fifty-five million, eight hundred ten thousand, four".