5261778 has 24 divisors (see below), whose sum is σ = 11573328. Its totient is φ = 1727352.

The previous prime is 5261777. The next prime is 5261783. The reversal of 5261778 is 8771625.

It is not an unprimeable number, because it can be changed into a prime (5261771) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 976 + ... + 3387.

It is an arithmetic number, because the mean of its divisors is an integer number (482222).

Almost surely, 2^5261778 is an apocalyptic number.

5261778 is an abundant number, since it is smaller than the sum of its proper divisors (6311550).

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

5261778 is a wasteful number, since it uses less digits than its factorization.

5261778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4438 (or 4435 counting only the distinct ones).

The product of its digits is 23520, while the sum is 36.

The square root of 5261778 is about 2293.8565779054. The cubic root of 5261778 is about 173.9312054638.

It can be divided in two parts, 526 and 1778, that added together give a square (2304 = 48²).

The spelling of 5261778 in words is "five million, two hundred sixty-one thousand, seven hundred seventy-eight".