71536501 has 4 divisors (see below), whose sum is σ = 75301600. Its totient is φ = 67771404.

The previous prime is 71536481. The next prime is 71536511. The reversal of 71536501 is 10563517.

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 71536501 - 2¹⁷ = 71405429 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 71536501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71536511) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1882521 + ... + 1882558.

It is an arithmetic number, because the mean of its divisors is an integer number (18825400).

Almost surely, 2^71536501 is an apocalyptic number.

It is an amenable number.

71536501 is a deficient number, since it is larger than the sum of its proper divisors (3765099).

71536501 is a wasteful number, since it uses less digits than its factorization.

71536501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3765098.

The product of its (nonzero) digits is 3150, while the sum is 28.

The square root of 71536501 is about 8457.9253366295. The cubic root of 71536501 is about 415.1221414324.

The spelling of 71536501 in words is "seventy-one million, five hundred thirty-six thousand, five hundred one".