71261347 has 4 divisors (see below), whose sum is σ = 71524576. Its totient is φ = 70998120.

The previous prime is 71261339. The next prime is 71261369. The reversal of 71261347 is 74316217.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74316217 = 4229 ⋅17573.

It is a cyclic number.

It is not a de Polignac number, because 71261347 - 2³ = 71261339 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71261317) 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, 131208 + ... + 131749.

It is an arithmetic number, because the mean of its divisors is an integer number (17881144).

Almost surely, 2^71261347 is an apocalyptic number.

71261347 is a deficient number, since it is larger than the sum of its proper divisors (263229).

71261347 is a wasteful number, since it uses less digits than its factorization.

71261347 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 263228.

The product of its digits is 7056, while the sum is 31.

The square root of 71261347 is about 8441.6436195803. The cubic root of 71261347 is about 414.5892233826.

The spelling of 71261347 in words is "seventy-one million, two hundred sixty-one thousand, three hundred forty-seven".