6504157 has 4 divisors (see below), whose sum is σ = 7095456. Its totient is φ = 5912860.

The previous prime is 6504143. The next prime is 6504181. The reversal of 6504157 is 7514056.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6504157 is a prime.

It is a Duffinian number.

6504157 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6504187) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 295633 + ... + 295654.

It is an arithmetic number, because the mean of its divisors is an integer number (1773864).

Almost surely, 2^6504157 is an apocalyptic number.

It is an amenable number.

6504157 is a deficient number, since it is larger than the sum of its proper divisors (591299).

6504157 is a wasteful number, since it uses less digits than its factorization.

6504157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 591298.

The product of its (nonzero) digits is 4200, while the sum is 28.

The square root of 6504157 is about 2550.3248812651. The cubic root of 6504157 is about 186.6653341033.

The spelling of 6504157 in words is "six million, five hundred four thousand, one hundred fifty-seven".