71516534 has 4 divisors (see below), whose sum is σ = 107274804. Its totient is φ = 35758266.

The previous prime is 71516531. The next prime is 71516579. The reversal of 71516534 is 43561517.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 43561517 = 23 ⋅1893979.

It is a super-2 number, since 2×71516534² = 10229229270746312, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 71516534.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71516531) 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 as a sum of consecutive naturals, namely, 17879132 + ... + 17879135.

It is an arithmetic number, because the mean of its divisors is an integer number (26818701).

Almost surely, 2^71516534 is an apocalyptic number.

71516534 is a deficient number, since it is larger than the sum of its proper divisors (35758270).

71516534 is a wasteful number, since it uses less digits than its factorization.

71516534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35758269.

The product of its digits is 12600, while the sum is 32.

The square root of 71516534 is about 8456.7448820453. The cubic root of 71516534 is about 415.0835153932.

The spelling of 71516534 in words is "seventy-one million, five hundred sixteen thousand, five hundred thirty-four".