2521005 has 8 divisors (see below), whose sum is σ = 4033632. Its totient is φ = 1344528.

The previous prime is 2521003. The next prime is 2521019. The reversal of 2521005 is 5001252.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2521005 - 2¹ = 2521003 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15), and also a Moran number because the ratio is a prime number: 168067 = 2521005 / (2 + 5 + 2 + 1 + 0 + 0 + 5).

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2521003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 84019 + ... + 84048.

It is an arithmetic number, because the mean of its divisors is an integer number (504204).

2^2521005 is an apocalyptic number.

It is an amenable number.

2521005 is a deficient number, since it is larger than the sum of its proper divisors (1512627).

2521005 is a wasteful number, since it uses less digits than its factorization.

2521005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168075.

The product of its (nonzero) digits is 100, while the sum is 15.

The square root of 2521005 is about 1587.7673003309. The cubic root of 2521005 is about 136.0999301597.

Adding to 2521005 its reverse (5001252), we get a palindrome (7522257).

The spelling of 2521005 in words is "two million, five hundred twenty-one thousand, five".