2497745 has 4 divisors (see below), whose sum is σ = 2997300. Its totient is φ = 1998192.

The previous prime is 2497739. The next prime is 2497751. The reversal of 2497745 is 5477942.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (2497739) and next prime (2497751).

It can be written as a sum of positive squares in 2 ways, for example, as 744769 + 1752976 = 863^2 + 1324^2 .

It is a cyclic number.

It is not a de Polignac number, because 2497745 - 2⁸ = 2497489 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2497699 and 2497708.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 249770 + ... + 249779.

It is an arithmetic number, because the mean of its divisors is an integer number (749325).

2^2497745 is an apocalyptic number.

It is an amenable number.

2497745 is a deficient number, since it is larger than the sum of its proper divisors (499555).

2497745 is an equidigital number, since it uses as much as digits as its factorization.

2497745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 499554.

The product of its digits is 70560, while the sum is 38.

The square root of 2497745 is about 1580.4255755966. The cubic root of 2497745 is about 135.6800618095.

The spelling of 2497745 in words is "two million, four hundred ninety-seven thousand, seven hundred forty-five".