2563801 has 4 divisors (see below), whose sum is σ = 2583504. Its totient is φ = 2544100.

The previous prime is 2563777. The next prime is 2563811. The reversal of 2563801 is 1083652.

It is a happy number.

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 a cyclic number.

It is not a de Polignac number, because 2563801 - 2¹¹ = 2561753 is a prime.

It is a Duffinian number.

2563801 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2563811) 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 3 ways as a sum of consecutive naturals, for example, 9655 + ... + 9916.

It is an arithmetic number, because the mean of its divisors is an integer number (645876).

2^2563801 is an apocalyptic number.

It is an amenable number.

2563801 is a deficient number, since it is larger than the sum of its proper divisors (19703).

2563801 is a wasteful number, since it uses less digits than its factorization.

2563801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19702.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 2563801 is about 1601.1873719212. The cubic root of 2563801 is about 136.8657466135.

It can be divided in two parts, 2563 and 801, that added together give a square (3364 = 58²).

The spelling of 2563801 in words is "two million, five hundred sixty-three thousand, eight hundred one".