4755721 has 8 divisors (see below), whose sum is σ = 4949120. Its totient is φ = 4565808.

The previous prime is 4755703. The next prime is 4755761. The reversal of 4755721 is 1275574.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 4755721 - 2⁵ = 4755689 is a prime.

It is not an unprimeable number, because it can be changed into a prime (4755701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2110 + ... + 3736.

It is an arithmetic number, because the mean of its divisors is an integer number (618640).

Almost surely, 2^4755721 is an apocalyptic number.

It is an amenable number.

4755721 is a deficient number, since it is larger than the sum of its proper divisors (193399).

4755721 is a wasteful number, since it uses less digits than its factorization.

4755721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1743.

The product of its digits is 9800, while the sum is 31.

The square root of 4755721 is about 2180.7615642248. The cubic root of 4755721 is about 168.1662304964.

It can be divided in two parts, 4755 and 721, that added together give a square (5476 = 74²).

The spelling of 4755721 in words is "four million, seven hundred fifty-five thousand, seven hundred twenty-one".