6531457 has 2 divisors, whose sum is σ = 6531458. Its totient is φ = 6531456.

The previous prime is 6531433. The next prime is 6531461. The reversal of 6531457 is 7541356.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6170256 + 361201 = 2484^2 + 601^2 .

It is a cyclic number.

It is not a de Polignac number, because 6531457 - 2¹¹ = 6529409 is a prime.

It is not a weakly prime, because it can be changed into another prime (6531407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3265728 + 3265729.

It is an arithmetic number, because the mean of its divisors is an integer number (3265729).

Almost surely, 2^6531457 is an apocalyptic number.

It is an amenable number.

6531457 is a deficient number, since it is larger than the sum of its proper divisors (1).

6531457 is an equidigital number, since it uses as much as digits as its factorization.

6531457 is an evil number, because the sum of its binary digits is even.

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

The square root of 6531457 is about 2555.6715360155. The cubic root of 6531457 is about 186.9261339995.

The spelling of 6531457 in words is "six million, five hundred thirty-one thousand, four hundred fifty-seven".