6455521331 has 8 divisors (see below), whose sum is σ = 7416367104. Its totient is φ = 5504332680.

The previous prime is 6455521309. The next prime is 6455521337. The reversal of 6455521331 is 1331255546.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 6455521331 - 2²⁶ = 6388412467 is a prime.

It is a super-2 number, since 2×6455521331² = 83347511309992023122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6455521291 and 6455521300.

It is not an unprimeable number, because it can be changed into a prime (6455521337) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2412845 + ... + 2415518.

It is an arithmetic number, because the mean of its divisors is an integer number (927045888).

Almost surely, 2^6455521331 is an apocalyptic number.

6455521331 is a deficient number, since it is larger than the sum of its proper divisors (960845773).

6455521331 is a wasteful number, since it uses less digits than its factorization.

6455521331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4828561.

The product of its digits is 54000, while the sum is 35.

The square root of 6455521331 is about 80346.2589732714. The cubic root of 6455521331 is about 1861.9889821917.

Adding to 6455521331 its reverse (1331255546), we get a palindrome (7786776877).

The spelling of 6455521331 in words is "six billion, four hundred fifty-five million, five hundred twenty-one thousand, three hundred thirty-one".