2513993 has 4 divisors (see below), whose sum is σ = 2555268. Its totient is φ = 2472720.

The previous prime is 2513941. The next prime is 2514013. The reversal of 2513993 is 3993152.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1459264 + 1054729 = 1208^2 + 1027^2 .

It is a cyclic number.

It is not a de Polignac number, because 2513993 - 2¹⁴ = 2497609 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a plaindrome in base 11.

It is not an unprimeable number, because it can be changed into a prime (2513293) 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, 20546 + ... + 20667.

It is an arithmetic number, because the mean of its divisors is an integer number (638817).

2^2513993 is an apocalyptic number.

It is an amenable number.

2513993 is a deficient number, since it is larger than the sum of its proper divisors (41275).

2513993 is an equidigital number, since it uses as much as digits as its factorization.

2513993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41274.

The product of its digits is 7290, while the sum is 32.

The square root of 2513993 is about 1585.5576306145. The cubic root of 2513993 is about 135.9736288257.

The spelling of 2513993 in words is "two million, five hundred thirteen thousand, nine hundred ninety-three".