6545519245 has 8 divisors (see below), whose sum is σ = 7855253784. Its totient is φ = 5235994944.

The previous prime is 6545519243. The next prime is 6545519261. The reversal of 6545519245 is 5429155456.

It can be written as a sum of positive squares in 4 ways, for example, as 385641 + 6545133604 = 621^2 + 80902^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 6545519245 - 2¹ = 6545519243 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6545519195 and 6545519204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6545519243) 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, 26847 + ... + 117523.

It is an arithmetic number, because the mean of its divisors is an integer number (981906723).

Almost surely, 2^6545519245 is an apocalyptic number.

It is an amenable number.

6545519245 is a deficient number, since it is larger than the sum of its proper divisors (1309734539).

6545519245 is a wasteful number, since it uses less digits than its factorization.

6545519245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105119.

The product of its digits is 1080000, while the sum is 46.

The square root of 6545519245 is about 80904.3833484935. The cubic root of 6545519245 is about 1870.6018866673.

The spelling of 6545519245 in words is "six billion, five hundred forty-five million, five hundred nineteen thousand, two hundred forty-five".