2990557 has 2 divisors, whose sum is σ = 2990558. Its totient is φ = 2990556.

The previous prime is 2990551. The next prime is 2990587. The reversal of 2990557 is 7550992.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1879641 + 1110916 = 1371^2 + 1054^2 .

It is a cyclic number.

It is not a de Polignac number, because 2990557 - 2¹¹ = 2988509 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2990551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1495278 + 1495279.

It is an arithmetic number, because the mean of its divisors is an integer number (1495279).

2^2990557 is an apocalyptic number.

It is an amenable number.

2990557 is a deficient number, since it is larger than the sum of its proper divisors (1).

2990557 is an equidigital number, since it uses as much as digits as its factorization.

2990557 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 28350, while the sum is 37.

The square root of 2990557 is about 1729.3226997874. The cubic root of 2990557 is about 144.0734739501.

The spelling of 2990557 in words is "two million, nine hundred ninety thousand, five hundred fifty-seven".