5491231285 has 16 divisors (see below), whose sum is σ = 7091479152. Its totient is φ = 4066790400.

The previous prime is 5491231253. The next prime is 5491231351. The reversal of 5491231285 is 5821321945.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 65141041 + 5426090244 = 8071^2 + 73662^2 .

It is not a de Polignac number, because 5491231285 - 2⁵ = 5491231253 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 524346 + ... + 534715.

It is an arithmetic number, because the mean of its divisors is an integer number (443217447).

Almost surely, 2^5491231285 is an apocalyptic number.

It is an amenable number.

5491231285 is a deficient number, since it is larger than the sum of its proper divisors (1600247867).

5491231285 is a wasteful number, since it uses less digits than its factorization.

5491231285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1059144.

The product of its digits is 86400, while the sum is 40.

The square root of 5491231285 is about 74102.8426242880. The cubic root of 5491231285 is about 1764.2355893451.

The spelling of 5491231285 in words is "five billion, four hundred ninety-one million, two hundred thirty-one thousand, two hundred eighty-five".