2485721 has 8 divisors (see below), whose sum is σ = 2899200. Its totient is φ = 2130324.

The previous prime is 2485687. The next prime is 2485727. The reversal of 2485721 is 1275842.

It is not a de Polignac number, because 2485721 - 2⁶ = 2485657 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 (2485727) 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, 3281 + ... + 3966.

It is an arithmetic number, because the mean of its divisors is an integer number (362400).

2^2485721 is an apocalyptic number.

It is an amenable number.

2485721 is a deficient number, since it is larger than the sum of its proper divisors (413479).

2485721 is an frugal number, since it uses more digits than its factorization.

2485721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7268 (or 7254 counting only the distinct ones).

The product of its digits is 4480, while the sum is 29.

The square root of 2485721 is about 1576.6169477714. The cubic root of 2485721 is about 135.4619928532.

The spelling of 2485721 in words is "two million, four hundred eighty-five thousand, seven hundred twenty-one".