71250481 has 9 divisors (see below), whose sum is σ = 74686521. Its totient is φ = 67966932.

The previous prime is 71250479. The next prime is 71250499. The reversal of 71250481 is 18405217.

The square root of 71250481 is 8441.

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

It is not a de Polignac number, because 71250481 - 2¹ = 71250479 is a prime.

It is a super-2 number, since 2×71250481² = 10153262085462722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71250581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 193960 + ... + 194326.

Almost surely, 2^71250481 is an apocalyptic number.

71250481 is the 8441-st square number.

71250481 is the 4221-st centered octagonal number.

It is an amenable number.

71250481 is a deficient number, since it is larger than the sum of its proper divisors (3436040).

71250481 is an frugal number, since it uses more digits than its factorization.

71250481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 780 (or 390 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 28.

The cubic root of 71250481 is about 414.5681499878.

Adding to 71250481 its reverse (18405217), we get a palindrome (89655698).

The spelling of 71250481 in words is "seventy-one million, two hundred fifty thousand, four hundred eighty-one".