71132261 has 8 divisors (see below), whose sum is σ = 74335104. Its totient is φ = 67938640.

The previous prime is 71132251. The next prime is 71132263. The reversal of 71132261 is 16223117.

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 71132261 - 2¹⁰ = 71131237 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71132263) 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 7 ways as a sum of consecutive naturals, for example, 17000 + ... + 20766.

It is an arithmetic number, because the mean of its divisors is an integer number (9291888).

Almost surely, 2^71132261 is an apocalyptic number.

It is an amenable number.

71132261 is a deficient number, since it is larger than the sum of its proper divisors (3202843).

71132261 is a wasteful number, since it uses less digits than its factorization.

71132261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4611.

The product of its digits is 504, while the sum is 23.

The square root of 71132261 is about 8433.9943680323. The cubic root of 71132261 is about 414.3387369031.

Adding to 71132261 its reverse (16223117), we get a palindrome (87355378).

The spelling of 71132261 in words is "seventy-one million, one hundred thirty-two thousand, two hundred sixty-one".