5491565850 has 96 divisors (see below), whose sum is σ = 13984622784. Its totient is φ = 1425548800.

The previous prime is 5491565791. The next prime is 5491565851. The reversal of 5491565850 is 585651945.

It is a self number, because there is not a number n which added to its sum of digits gives 5491565850.

It is not an unprimeable number, because it can be changed into a prime (5491565851) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1038814 + ... + 1044086.

It is an arithmetic number, because the mean of its divisors is an integer number (145673154).

Almost surely, 2^5491565850 is an apocalyptic number.

5491565850 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 5491565850, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6992311392).

5491565850 is an abundant number, since it is smaller than the sum of its proper divisors (8493056934).

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

5491565850 is a wasteful number, since it uses less digits than its factorization.

5491565850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5472 (or 5467 counting only the distinct ones).

The product of its (nonzero) digits is 1080000, while the sum is 48.

The square root of 5491565850 is about 74105.1000269212. The cubic root of 5491565850 is about 1764.2714185585.

The spelling of 5491565850 in words is "five billion, four hundred ninety-one million, five hundred sixty-five thousand, eight hundred fifty".