2549997 has 12 divisors (see below), whose sum is σ = 3697564. Its totient is φ = 1693440.

The previous prime is 2549993. The next prime is 2550001. The reversal of 2549997 is 7999452.

It is an interprime number because it is at equal distance from previous prime (2549993) and next prime (2550001).

It can be written as a sum of positive squares in 2 ways, for example, as 281961 + 2268036 = 531^2 + 1506^2 .

It is not a de Polignac number, because 2549997 - 2² = 2549993 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 (2549993) 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 11 ways as a sum of consecutive naturals, for example, 3453 + ... + 4125.

2^2549997 is an apocalyptic number.

It is an amenable number.

2549997 is a deficient number, since it is larger than the sum of its proper divisors (1147567).

2549997 is a wasteful number, since it uses less digits than its factorization.

2549997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1100 (or 1097 counting only the distinct ones).

The product of its digits is 204120, while the sum is 45.

The square root of 2549997 is about 1596.8710029304. The cubic root of 2549997 is about 136.6196672283.

The spelling of 2549997 in words is "two million, five hundred forty-nine thousand, nine hundred ninety-seven".