272481021 has 6 divisors (see below), whose sum is σ = 393583710. Its totient is φ = 181654008.

The previous prime is 272481019. The next prime is 272481047. The reversal of 272481021 is 120184272.

It can be written as a sum of positive squares in only one way, i.e., 268500996 + 3980025 = 16386^2 + 1995^2 .

It is not a de Polignac number, because 272481021 - 2¹ = 272481019 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (272481091) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 15137826 + ... + 15137843.

It is an arithmetic number, because the mean of its divisors is an integer number (65597285).

Almost surely, 2^272481021 is an apocalyptic number.

It is an amenable number.

272481021 is a deficient number, since it is larger than the sum of its proper divisors (121102689).

272481021 is a wasteful number, since it uses less digits than its factorization.

272481021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30275675 (or 30275672 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 27.

The square root of 272481021 is about 16506.9991518749. Note that the first 3 decimals coincide. The cubic root of 272481021 is about 648.3040768242.

The spelling of 272481021 in words is "two hundred seventy-two million, four hundred eighty-one thousand, twenty-one".