2521433 has 4 divisors (see below), whose sum is σ = 2654160. Its totient is φ = 2388708.

The previous prime is 2521429. The next prime is 2521451. The reversal of 2521433 is 3341252.

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 2521433 - 2² = 2521429 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2521733) 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, 66335 + ... + 66372.

It is an arithmetic number, because the mean of its divisors is an integer number (663540).

2^2521433 is an apocalyptic number.

It is an amenable number.

2521433 is a deficient number, since it is larger than the sum of its proper divisors (132727).

2521433 is a wasteful number, since it uses less digits than its factorization.

2521433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132726.

The product of its digits is 720, while the sum is 20.

The square root of 2521433 is about 1587.9020750663. The cubic root of 2521433 is about 136.1076317805.

Adding to 2521433 its reverse (3341252), we get a palindrome (5862685).

The spelling of 2521433 in words is "two million, five hundred twenty-one thousand, four hundred thirty-three".