2445731 has 4 divisors (see below), whose sum is σ = 2448912. Its totient is φ = 2442552.

The previous prime is 2445721. The next prime is 2445733. The reversal of 2445731 is 1375442.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 1375442 = 2 ⋅687721.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2445731 is a prime.

It is a super-2 number, since 2×2445731² = 11963200248722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2445731.

It is not an unprimeable number, because it can be changed into a prime (2445733) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 365 + ... + 2241.

It is an arithmetic number, because the mean of its divisors is an integer number (612228).

2^2445731 is an apocalyptic number.

2445731 is a deficient number, since it is larger than the sum of its proper divisors (3181).

2445731 is a wasteful number, since it uses less digits than its factorization.

2445731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3180.

The product of its digits is 3360, while the sum is 26.

The square root of 2445731 is about 1563.8833076672. The cubic root of 2445731 is about 134.7316296324.

The spelling of 2445731 in words is "two million, four hundred forty-five thousand, seven hundred thirty-one".