2521534 has 4 divisors (see below), whose sum is σ = 3782304. Its totient is φ = 1260766.

The previous prime is 2521517. The next prime is 2521537. The reversal of 2521534 is 4351252.

It is a semiprime because it is the product of two primes.

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 (2521537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 630382 + ... + 630385.

It is an arithmetic number, because the mean of its divisors is an integer number (945576).

2^2521534 is an apocalyptic number.

2521534 is a deficient number, since it is larger than the sum of its proper divisors (1260770).

2521534 is a wasteful number, since it uses less digits than its factorization.

2521534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1260769.

The product of its digits is 1200, while the sum is 22.

The square root of 2521534 is about 1587.9338777166. The cubic root of 2521534 is about 136.1094490920.

Adding to 2521534 its reverse (4351252), we get a palindrome (6872786).

The spelling of 2521534 in words is "two million, five hundred twenty-one thousand, five hundred thirty-four".