2563393 has 4 divisors (see below), whose sum is σ = 2929600. Its totient is φ = 2197188.

The previous prime is 2563387. The next prime is 2563409. The reversal of 2563393 is 3933652.

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.

It is not a de Polignac number, because 2563393 - 2⁹ = 2562881 is a prime.

It is a d-powerful number, because it can be written as 2³ + 5⁹ + 6 + 3⁹ + 3¹⁰ + 9² + 3¹² .

It is a Duffinian number.

2563393 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2563303) 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, 183093 + ... + 183106.

It is an arithmetic number, because the mean of its divisors is an integer number (732400).

2^2563393 is an apocalyptic number.

It is an amenable number.

2563393 is a deficient number, since it is larger than the sum of its proper divisors (366207).

2563393 is an equidigital number, since it uses as much as digits as its factorization.

2563393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 366206.

The product of its digits is 14580, while the sum is 31.

The square root of 2563393 is about 1601.0599614006. The cubic root of 2563393 is about 136.8584860153.

The spelling of 2563393 in words is "two million, five hundred sixty-three thousand, three hundred ninety-three".