71053249 has 4 divisors (see below), whose sum is σ = 71089200. Its totient is φ = 71017300.

The previous prime is 71053207. The next prime is 71053253. The reversal of 71053249 is 94235017.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 71053249 - 2²⁵ = 37498817 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 71053249.

It is not an unprimeable number, because it can be changed into a prime (71053289) 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, 14827 + ... + 19024.

It is an arithmetic number, because the mean of its divisors is an integer number (17772300).

Almost surely, 2^71053249 is an apocalyptic number.

It is an amenable number.

71053249 is a deficient number, since it is larger than the sum of its proper divisors (35951).

71053249 is a wasteful number, since it uses less digits than its factorization.

71053249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35950.

The product of its (nonzero) digits is 7560, while the sum is 31.

The square root of 71053249 is about 8429.3089277829. The cubic root of 71053249 is about 414.1852675736.

The spelling of 71053249 in words is "seventy-one million, fifty-three thousand, two hundred forty-nine".