2505943 has 8 divisors (see below), whose sum is σ = 2745360. Its totient is φ = 2268480.

The previous prime is 2505917. The next prime is 2505983. The reversal of 2505943 is 3495052.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2505943 - 2¹³ = 2497751 is a prime.

It is a Duffinian number.

It is a plaindrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2505983) 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 7 ways as a sum of consecutive naturals, for example, 4221 + ... + 4777.

It is an arithmetic number, because the mean of its divisors is an integer number (343170).

2^2505943 is an apocalyptic number.

2505943 is a deficient number, since it is larger than the sum of its proper divisors (239417).

2505943 is a wasteful number, since it uses less digits than its factorization.

2505943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 977.

The product of its (nonzero) digits is 5400, while the sum is 28.

The square root of 2505943 is about 1583.0170561305. The cubic root of 2505943 is about 135.8283409492.

The spelling of 2505943 in words is "two million, five hundred five thousand, nine hundred forty-three".