71150261 has 16 divisors (see below), whose sum is σ = 88032000. Its totient is φ = 55997568.

The previous prime is 71150257. The next prime is 71150267. The reversal of 71150261 is 16205117.

It is a cyclic number.

It is not a de Polignac number, because 71150261 - 2² = 71150257 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71150267) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16145 + ... + 20073.

It is an arithmetic number, because the mean of its divisors is an integer number (5502000).

Almost surely, 2^71150261 is an apocalyptic number.

It is an amenable number.

71150261 is a deficient number, since it is larger than the sum of its proper divisors (16881739).

71150261 is a wasteful number, since it uses less digits than its factorization.

71150261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4148.

The product of its (nonzero) digits is 420, while the sum is 23.

The square root of 71150261 is about 8435.0614105648. The cubic root of 71150261 is about 414.3736833917.

Adding to 71150261 its reverse (16205117), we get a palindrome (87355378).

The spelling of 71150261 in words is "seventy-one million, one hundred fifty thousand, two hundred sixty-one".