72281053 has 8 divisors (see below), whose sum is σ = 78938496. Its totient is φ = 65780400.

The previous prime is 72281039. The next prime is 72281071. The reversal of 72281053 is 35018227.

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 72281053 - 2¹⁷ = 72149981 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72281003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38233 + ... + 40078.

It is an arithmetic number, because the mean of its divisors is an integer number (9867312).

Almost surely, 2^72281053 is an apocalyptic number.

It is an amenable number.

72281053 is a deficient number, since it is larger than the sum of its proper divisors (6657443).

72281053 is a wasteful number, since it uses less digits than its factorization.

72281053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78395.

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 72281053 is about 8501.8264508281. The cubic root of 72281053 is about 416.5573708709.

It can be divided in two parts, 7228 and 1053, that added together give a square (8281 = 91²).

The spelling of 72281053 in words is "seventy-two million, two hundred eighty-one thousand, fifty-three".