55860000 has 360 divisors, whose sum is σ = 224365680. Its totient is φ = 12096000.

The previous prime is 55859987. The next prime is 55860001. The reversal of 55860000 is 6855.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (55860001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 2939991 + ... + 2940009.

It is an arithmetic number, because the mean of its divisors is an integer number (623238).

Almost surely, 2^55860000 is an apocalyptic number.

55860000 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55860000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (112182840).

55860000 is an abundant number, since it is smaller than the sum of its proper divisors (168505680).

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

55860000 is a wasteful number, since it uses less digits than its factorization.

55860000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66 (or 36 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 55860000 is about 7473.9547764219. The cubic root of 55860000 is about 382.2671486362.

Adding to 55860000 its reverse (6855), we get a palindrome (55866855).

The spelling of 55860000 in words is "fifty-five million, eight hundred sixty thousand".