2520723 has 4 divisors (see below), whose sum is σ = 3360968. Its totient is φ = 1680480.

The previous prime is 2520697. The next prime is 2520769. The reversal of 2520723 is 3270252.

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

It is not a de Polignac number, because 2520723 - 2⁶ = 2520659 is a prime.

It is a D-number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2520723.

It is not an unprimeable number, because it can be changed into a prime (2521723) 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, 420118 + ... + 420123.

It is an arithmetic number, because the mean of its divisors is an integer number (840242).

2^2520723 is an apocalyptic number.

2520723 is a deficient number, since it is larger than the sum of its proper divisors (840245).

2520723 is an equidigital number, since it uses as much as digits as its factorization.

2520723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 840244.

The product of its (nonzero) digits is 840, while the sum is 21.

The square root of 2520723 is about 1587.6784939023. The cubic root of 2520723 is about 136.0948552508.

Adding to 2520723 its reverse (3270252), we get a palindrome (5790975).

The spelling of 2520723 in words is "two million, five hundred twenty thousand, seven hundred twenty-three".