3555557 has 2 divisors, whose sum is σ = 3555558. Its totient is φ = 3555556.

The previous prime is 3555551. The next prime is 3555571. The reversal of 3555557 is 7555553.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3511876 + 43681 = 1874^2 + 209^2 .

It is a cyclic number.

It is not a de Polignac number, because 3555557 - 2¹⁶ = 3490021 is a prime.

It is a Chen prime.

It is a plaindrome in base 10.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3555551) by changing a digit.

It is an upside-down number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1777778 + 1777779.

It is an arithmetic number, because the mean of its divisors is an integer number (1777779).

Almost surely, 2^3555557 is an apocalyptic number.

It is an amenable number.

3555557 is a deficient number, since it is larger than the sum of its proper divisors (1).

3555557 is an equidigital number, since it uses as much as digits as its factorization.

3555557 is an evil number, because the sum of its binary digits is even.

The product of its digits is 65625, while the sum is 35.

The square root of 3555557 is about 1885.6184661803. The cubic root of 3555557 is about 152.6285863422.

The spelling of 3555557 in words is "three million, five hundred fifty-five thousand, five hundred fifty-seven".