71723053 has 4 divisors (see below), whose sum is σ = 72529020. Its totient is φ = 70917088.

The previous prime is 71723033. The next prime is 71723059. The reversal of 71723053 is 35032717.

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 26604964 + 45118089 = 5158^2 + 6717^2 .

It is a cyclic number.

It is not a de Polignac number, because 71723053 - 2¹³ = 71714861 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 (71723059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 402850 + ... + 403027.

It is an arithmetic number, because the mean of its divisors is an integer number (18132255).

Almost surely, 2^71723053 is an apocalyptic number.

It is an amenable number.

71723053 is a deficient number, since it is larger than the sum of its proper divisors (805967).

71723053 is an equidigital number, since it uses as much as digits as its factorization.

71723053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 805966.

The product of its (nonzero) digits is 4410, while the sum is 28.

The square root of 71723053 is about 8468.9463925568. The cubic root of 71723053 is about 415.4826783364.

The spelling of 71723053 in words is "seventy-one million, seven hundred twenty-three thousand, fifty-three".