5405778 has 72 divisors (see below), whose sum is σ = 14191632. Its totient is φ = 1537704.

The previous prime is 5405773. The next prime is 5405783. The reversal of 5405778 is 8775045.

It is an interprime number because it is at equal distance from previous prime (5405773) and next prime (5405783).

It is not an unprimeable number, because it can be changed into a prime (5405773) 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 35 ways as a sum of consecutive naturals, for example, 23701 + ... + 23927.

It is an arithmetic number, because the mean of its divisors is an integer number (197106).

Almost surely, 2^5405778 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5405778, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7095816).

5405778 is an abundant number, since it is smaller than the sum of its proper divisors (8785854).

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

5405778 is a wasteful number, since it uses less digits than its factorization.

5405778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 258 (or 239 counting only the distinct ones).

The product of its (nonzero) digits is 39200, while the sum is 36.

The square root of 5405778 is about 2325.0329029930. The cubic root of 5405778 is about 175.5036159676.

The spelling of 5405778 in words is "five million, four hundred five thousand, seven hundred seventy-eight".