4925721 has 4 divisors (see below), whose sum is σ = 6567632. Its totient is φ = 3283812.

The previous prime is 4925719. The next prime is 4925747. The reversal of 4925721 is 1275294.

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 not a de Polignac number, because 4925721 - 2¹ = 4925719 is a prime.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4925761) 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, 820951 + ... + 820956.

It is an arithmetic number, because the mean of its divisors is an integer number (1641908).

Almost surely, 2^4925721 is an apocalyptic number.

It is an amenable number.

4925721 is a deficient number, since it is larger than the sum of its proper divisors (1641911).

4925721 is a wasteful number, since it uses less digits than its factorization.

4925721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1641910.

The product of its digits is 5040, while the sum is 30.

The square root of 4925721 is about 2219.3965396026. The cubic root of 4925721 is about 170.1465978832.

The spelling of 4925721 in words is "four million, nine hundred twenty-five thousand, seven hundred twenty-one".