4568272921 has 3 divisors (see below), whose sum is σ = 4568340511. Its totient is φ = 4568205332.

The previous prime is 4568272897. The next prime is 4568272927. The reversal of 4568272921 is 1292728654.

The square root of 4568272921 is 67589.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 2454112521 + 2114160400 = 49539^2 + 45980^2 .

It is not a de Polignac number, because 4568272921 - 2⁵ = 4568272889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4568272927) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 33795 + ... + 101383.

Almost surely, 2^4568272921 is an apocalyptic number.

4568272921 is the 67589-th square number.

4568272921 is the 33795-th centered octagonal number.

It is an amenable number.

4568272921 is a deficient number, since it is larger than the sum of its proper divisors (67590).

4568272921 is an frugal number, since it uses more digits than its factorization.

4568272921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135178 (or 67589 counting only the distinct ones).

The product of its digits is 483840, while the sum is 46.

The cubic root of 4568272921 is about 1659.2710934690.

The spelling of 4568272921 in words is "four billion, five hundred sixty-eight million, two hundred seventy-two thousand, nine hundred twenty-one".