6505257 has 16 divisors (see below), whose sum is σ = 9768960. Its totient is φ = 3814800.

The previous prime is 6505243. The next prime is 6505267. The reversal of 6505257 is 7525056.

It is not a de Polignac number, because 6505257 - 2¹⁰ = 6504233 is a prime.

6505257 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (6505267) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2157 + ... + 4202.

It is an arithmetic number, because the mean of its divisors is an integer number (610560).

Almost surely, 2^6505257 is an apocalyptic number.

It is an amenable number.

6505257 is a deficient number, since it is larger than the sum of its proper divisors (3263703).

6505257 is a wasteful number, since it uses less digits than its factorization.

6505257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6404.

The product of its (nonzero) digits is 10500, while the sum is 30.

The square root of 6505257 is about 2550.5405309463. The cubic root of 6505257 is about 186.6758566195.

The spelling of 6505257 in words is "six million, five hundred five thousand, two hundred fifty-seven".