71464521 has 4 divisors (see below), whose sum is σ = 95286032. Its totient is φ = 47643012.

The previous prime is 71464499. The next prime is 71464531. The reversal of 71464521 is 12546417.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 71464521 - 2⁶ = 71464457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71464531) 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 3 ways as a sum of consecutive naturals, for example, 11910751 + ... + 11910756.

It is an arithmetic number, because the mean of its divisors is an integer number (23821508).

Almost surely, 2^71464521 is an apocalyptic number.

It is an amenable number.

71464521 is a deficient number, since it is larger than the sum of its proper divisors (23821511).

71464521 is a wasteful number, since it uses less digits than its factorization.

71464521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23821510.

The product of its digits is 6720, while the sum is 30.

The square root of 71464521 is about 8453.6690850778. The cubic root of 71464521 is about 414.9828627945.

The spelling of 71464521 in words is "seventy-one million, four hundred sixty-four thousand, five hundred twenty-one".