5651856 has 150 divisors (see below), whose sum is σ = 19242630. Its totient is φ = 1596672.

The previous prime is 5651851. The next prime is 5651869. The reversal of 5651856 is 6581565.

It can be written as a sum of positive squares in only one way, i.e., 4064256 + 1587600 = 2016^2 + 1260^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 5651856.

It is not an unprimeable number, because it can be changed into a prime (5651851) 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 29 ways as a sum of consecutive naturals, for example, 63460 + ... + 63548.

Almost surely, 2^5651856 is an apocalyptic number.

5651856 is a gapful number since it is divisible by the number (56) 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 5651856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9621315).

5651856 is an abundant number, since it is smaller than the sum of its proper divisors (13590774).

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

5651856 is a wasteful number, since it uses less digits than its factorization.

5651856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123 (or 101 counting only the distinct ones).

The product of its digits is 36000, while the sum is 36.

The square root of 5651856 is about 2377.3632452783. The cubic root of 5651856 is about 178.1272498331.

The spelling of 5651856 in words is "five million, six hundred fifty-one thousand, eight hundred fifty-six".