5555326491 has 32 divisors (see below), whose sum is σ = 9668951040. Its totient is φ = 3107872800.

The previous prime is 5555326451. The next prime is 5555326537. The reversal of 5555326491 is 1946235555.

5555326491 is a `hidden beast` number, since 5 + 5 + 553 + 2 + 6 + 4 + 91 = 666.

It is not a de Polignac number, because 5555326491 - 2¹⁴ = 5555310107 is a prime.

It is not an unprimeable number, because it can be changed into a prime (5555326411) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 715555 + ... + 723276.

It is an arithmetic number, because the mean of its divisors is an integer number (302154720).

Almost surely, 2^5555326491 is an apocalyptic number.

5555326491 is a deficient number, since it is larger than the sum of its proper divisors (4113624549).

5555326491 is a wasteful number, since it uses less digits than its factorization.

5555326491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1438864 (or 1438858 counting only the distinct ones).

The product of its digits is 810000, while the sum is 45.

The square root of 5555326491 is about 74534.0626224010. The cubic root of 5555326491 is about 1771.0732732285.

The spelling of 5555326491 in words is "five billion, five hundred fifty-five million, three hundred twenty-six thousand, four hundred ninety-one".