71480521 has 8 divisors (see below), whose sum is σ = 81895040. Its totient is φ = 61116768.

The previous prime is 71480503. The next prime is 71480557. The reversal of 71480521 is 12508417.

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 71480521 - 2¹⁷ = 71349449 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 71480521.

It is not an unprimeable number, because it can be changed into a prime (71480581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9621 + ... + 15346.

It is an arithmetic number, because the mean of its divisors is an integer number (10236880).

Almost surely, 2^71480521 is an apocalyptic number.

It is an amenable number.

71480521 is a deficient number, since it is larger than the sum of its proper divisors (10414519).

71480521 is a wasteful number, since it uses less digits than its factorization.

71480521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25383.

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

The square root of 71480521 is about 8454.6153667686. The cubic root of 71480521 is about 415.0138302838.

Adding to 71480521 its reverse (12508417), we get a palindrome (83988938).

The spelling of 71480521 in words is "seventy-one million, four hundred eighty thousand, five hundred twenty-one".