71255365 has 4 divisors (see below), whose sum is σ = 85506444. Its totient is φ = 57004288.

The previous prime is 71255351. The next prime is 71255369. The reversal of 71255365 is 56355217.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 56355217 = 257 ⋅219281.

It can be written as a sum of positive squares in 2 ways, for example, as 28718881 + 42536484 = 5359^2 + 6522^2 .

It is a cyclic number.

It is not a de Polignac number, because 71255365 - 2¹⁷ = 71124293 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 71255365.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71255369) 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 3 ways as a sum of consecutive naturals, for example, 7125532 + ... + 7125541.

It is an arithmetic number, because the mean of its divisors is an integer number (21376611).

Almost surely, 2^71255365 is an apocalyptic number.

It is an amenable number.

71255365 is a deficient number, since it is larger than the sum of its proper divisors (14251079).

71255365 is a wasteful number, since it uses less digits than its factorization.

71255365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14251078.

The product of its digits is 31500, while the sum is 34.

The square root of 71255365 is about 8441.2892972579. The cubic root of 71255365 is about 414.5776222260.

The spelling of 71255365 in words is "seventy-one million, two hundred fifty-five thousand, three hundred sixty-five".