5491055787 has 20 divisors (see below), whose sum is σ = 8541145320. Its totient is φ = 3137742048.

The previous prime is 5491055767. The next prime is 5491055797. The reversal of 5491055787 is 7875501945.

It is not a de Polignac number, because 5491055787 - 2⁷ = 5491055659 is a prime.

It is not an unprimeable number, because it can be changed into a prime (5491055747) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 373962 + ... + 388367.

It is an arithmetic number, because the mean of its divisors is an integer number (427057266).

Almost surely, 2^5491055787 is an apocalyptic number.

5491055787 is a deficient number, since it is larger than the sum of its proper divisors (3050089533).

5491055787 is an frugal number, since it uses more digits than its factorization.

5491055787 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 762360 (or 762339 counting only the distinct ones).

The product of its (nonzero) digits is 1764000, while the sum is 51.

The square root of 5491055787 is about 74101.6584632220. The cubic root of 5491055787 is about 1764.2167943427.

The spelling of 5491055787 in words is "five billion, four hundred ninety-one million, fifty-five thousand, seven hundred eighty-seven".