71105453 has 4 divisors (see below), whose sum is σ = 73027260. Its totient is φ = 69183648.

The previous prime is 71105449. The next prime is 71105471. The reversal of 71105453 is 35450117.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 28111204 + 42994249 = 5302^2 + 6557^2 .

It is a cyclic number.

It is not a de Polignac number, because 71105453 - 2² = 71105449 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71105473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 960848 + ... + 960921.

It is an arithmetic number, because the mean of its divisors is an integer number (18256815).

Almost surely, 2^71105453 is an apocalyptic number.

It is an amenable number.

71105453 is a deficient number, since it is larger than the sum of its proper divisors (1921807).

71105453 is a wasteful number, since it uses less digits than its factorization.

71105453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1921806.

The product of its (nonzero) digits is 2100, while the sum is 26.

The square root of 71105453 is about 8432.4049357227. The cubic root of 71105453 is about 414.2866790023.

The spelling of 71105453 in words is "seventy-one million, one hundred five thousand, four hundred fifty-three".