6555457 has 2 divisors, whose sum is σ = 6555458. Its totient is φ = 6555456.

The previous prime is 6555443. The next prime is 6555463. The reversal of 6555457 is 7545556.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6471936 + 83521 = 2544^2 + 289^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6555457 is a prime.

6555457 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (6555407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3277728 + 3277729.

It is an arithmetic number, because the mean of its divisors is an integer number (3277729).

Almost surely, 2^6555457 is an apocalyptic number.

It is an amenable number.

6555457 is a deficient number, since it is larger than the sum of its proper divisors (1).

6555457 is an equidigital number, since it uses as much as digits as its factorization.

6555457 is an evil number, because the sum of its binary digits is even.

The product of its digits is 105000, while the sum is 37.

The square root of 6555457 is about 2560.3626696232. The cubic root of 6555457 is about 187.1548090352.

Subtracting 6555457 from its reverse (7545556), we obtain a palindrome (990099).

The spelling of 6555457 in words is "six million, five hundred fifty-five thousand, four hundred fifty-seven".