2563501 has 4 divisors (see below), whose sum is σ = 2579392. Its totient is φ = 2547612.

The previous prime is 2563493. The next prime is 2563507. The reversal of 2563501 is 1053652.

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 2563501 - 2³ = 2563493 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2563507) 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, 7701 + ... + 8026.

It is an arithmetic number, because the mean of its divisors is an integer number (644848).

2^2563501 is an apocalyptic number.

It is an amenable number.

2563501 is a deficient number, since it is larger than the sum of its proper divisors (15891).

2563501 is a wasteful number, since it uses less digits than its factorization.

2563501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15890.

The product of its (nonzero) digits is 900, while the sum is 22.

The square root of 2563501 is about 1601.0936887016. The cubic root of 2563501 is about 136.8604080133.

The spelling of 2563501 in words is "two million, five hundred sixty-three thousand, five hundred one".