6543157 has 4 divisors (see below), whose sum is σ = 6604416. Its totient is φ = 6481900.

The previous prime is 6543127. The next prime is 6543169. The reversal of 6543157 is 7513456.

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 not a de Polignac number, because 6543157 - 2⁷ = 6543029 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6543127) 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, 30469 + ... + 30682.

It is an arithmetic number, because the mean of its divisors is an integer number (1651104).

Almost surely, 2^6543157 is an apocalyptic number.

It is an amenable number.

6543157 is a deficient number, since it is larger than the sum of its proper divisors (61259).

6543157 is a wasteful number, since it uses less digits than its factorization.

6543157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61258.

The product of its digits is 12600, while the sum is 31.

The square root of 6543157 is about 2557.9595383821. The cubic root of 6543157 is about 187.0376829318.

Subtracting 6543157 from its reverse (7513456), we obtain a cube (970299 = 99³).

The spelling of 6543157 in words is "six million, five hundred forty-three thousand, one hundred fifty-seven".