2490757 has 4 divisors (see below), whose sum is σ = 2571136. Its totient is φ = 2410380.

The previous prime is 2490743. The next prime is 2490769. The reversal of 2490757 is 7570942.

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 an emirpimes, since its reverse is a distinct semiprime: 7570942 = 2 ⋅3785471.

It is a cyclic number.

It is not a de Polignac number, because 2490757 - 2¹¹ = 2488709 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 (2490707) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40143 + ... + 40204.

It is an arithmetic number, because the mean of its divisors is an integer number (642784).

2^2490757 is an apocalyptic number.

It is an amenable number.

2490757 is a deficient number, since it is larger than the sum of its proper divisors (80379).

2490757 is an equidigital number, since it uses as much as digits as its factorization.

2490757 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80378.

The product of its (nonzero) digits is 17640, while the sum is 34.

The square root of 2490757 is about 1578.2132302069. The cubic root of 2490757 is about 135.5534118576.

It can be divided in two parts, 24907 and 57, that added together give a square (24964 = 158²).

The spelling of 2490757 in words is "two million, four hundred ninety thousand, seven hundred fifty-seven".