2501993 has 4 divisors (see below), whose sum is σ = 2694468. Its totient is φ = 2309520.

The previous prime is 2501987. The next prime is 2501999. The reversal of 2501993 is 3991052.

2501993 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 (2501987) and next prime (2501999).

It can be written as a sum of positive squares in 2 ways, for example, as 994009 + 1507984 = 997^2 + 1228^2 .

It is a cyclic number.

It is not a de Polignac number, because 2501993 - 2¹⁰ = 2500969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2501999) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 96218 + ... + 96243.

It is an arithmetic number, because the mean of its divisors is an integer number (673617).

2^2501993 is an apocalyptic number.

It is an amenable number.

2501993 is a deficient number, since it is larger than the sum of its proper divisors (192475).

2501993 is a wasteful number, since it uses less digits than its factorization.

2501993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192474.

The product of its (nonzero) digits is 2430, while the sum is 29.

The square root of 2501993 is about 1581.7689464647. The cubic root of 2501993 is about 135.7569368122.

The spelling of 2501993 in words is "two million, five hundred one thousand, nine hundred ninety-three".