2550557 has 4 divisors (see below), whose sum is σ = 2554080. Its totient is φ = 2547036.

The previous prime is 2550551. The next prime is 2550563. The reversal of 2550557 is 7550552.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is an interprime number because it is at equal distance from previous prime (2550551) and next prime (2550563).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2550557 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2550551) 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 in 3 ways as a sum of consecutive naturals, for example, 233 + ... + 2270.

It is an arithmetic number, because the mean of its divisors is an integer number (638520).

2^2550557 is an apocalyptic number.

It is an amenable number.

2550557 is a deficient number, since it is larger than the sum of its proper divisors (3523).

2550557 is a wasteful number, since it uses less digits than its factorization.

2550557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3522.

The product of its (nonzero) digits is 8750, while the sum is 29.

The square root of 2550557 is about 1597.0463362094. The cubic root of 2550557 is about 136.6296674249.

The spelling of 2550557 in words is "two million, five hundred fifty thousand, five hundred fifty-seven".