2499775 has 6 divisors (see below), whose sum is σ = 3099752. Its totient is φ = 1999800.

The previous prime is 2499751. The next prime is 2499779. The reversal of 2499775 is 5779942.

It is not a de Polignac number, because 2499775 - 2¹¹ = 2497727 is a prime.

It is a d-powerful number, because it can be written as 2¹³ + 4³ + 9⁴ + 9⁶ + 7² + 7³ + 5⁹ .

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2499779) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 49971 + ... + 50020.

2^2499775 is an apocalyptic number.

2499775 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

2499775 is a deficient number, since it is larger than the sum of its proper divisors (599977).

2499775 is an equidigital number, since it uses as much as digits as its factorization.

2499775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100001 (or 99996 counting only the distinct ones).

The product of its digits is 158760, while the sum is 43.

The square root of 2499775 is about 1581.0676772359. The cubic root of 2499775 is about 135.7168090812.

It can be divided in two parts, 24 and 99775, that added together give a palindrome (99799).

The spelling of 2499775 in words is "two million, four hundred ninety-nine thousand, seven hundred seventy-five".