2521723 has 2 divisors, whose sum is σ = 2521724. Its totient is φ = 2521722.

The previous prime is 2521721. The next prime is 2521733. The reversal of 2521723 is 3271252.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2521723 - 2¹ = 2521721 is a prime.

Together with 2521721, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 2521694 and 2521703.

It is not a weakly prime, because it can be changed into another prime (2521721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1260861 + 1260862.

It is an arithmetic number, because the mean of its divisors is an integer number (1260862).

2^2521723 is an apocalyptic number.

2521723 is a deficient number, since it is larger than the sum of its proper divisors (1).

2521723 is an equidigital number, since it uses as much as digits as its factorization.

2521723 is an evil number, because the sum of its binary digits is even.

The product of its digits is 840, while the sum is 22.

The square root of 2521723 is about 1587.9933878956. The cubic root of 2521723 is about 136.1128496731.

Adding to 2521723 its reverse (3271252), we get a palindrome (5792975).

The spelling of 2521723 in words is "two million, five hundred twenty-one thousand, seven hundred twenty-three".