6556057 has 4 divisors (see below), whose sum is σ = 6645940. Its totient is φ = 6466176.

The previous prime is 6556049. The next prime is 6556061. The reversal of 6556057 is 7506556.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5089536 + 1466521 = 2256^2 + 1211^2 .

It is a cyclic number.

It is not a de Polignac number, because 6556057 - 2³ = 6556049 is a prime.

It is an Ulam number.

It is a Duffinian number.

6556057 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (6556027) 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, 44832 + ... + 44977.

It is an arithmetic number, because the mean of its divisors is an integer number (1661485).

Almost surely, 2^6556057 is an apocalyptic number.

It is an amenable number.

6556057 is a deficient number, since it is larger than the sum of its proper divisors (89883).

6556057 is an equidigital number, since it uses as much as digits as its factorization.

6556057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89882.

The product of its (nonzero) digits is 31500, while the sum is 34.

The square root of 6556057 is about 2560.4798378429. The cubic root of 6556057 is about 187.1605187546.

The spelling of 6556057 in words is "six million, five hundred fifty-six thousand, fifty-seven".