71021093 has 32 divisors (see below), whose sum is σ = 88660992. Its totient is φ = 55987200.

The previous prime is 71021059. The next prime is 71021099. The reversal of 71021093 is 39012017.

It is a cyclic number.

It is not a de Polignac number, because 71021093 - 2¹⁴ = 71004709 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71021099) 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 31 ways as a sum of consecutive naturals, for example, 163805 + ... + 164237.

It is an arithmetic number, because the mean of its divisors is an integer number (2770656).

Almost surely, 2^71021093 is an apocalyptic number.

It is an amenable number.

71021093 is a deficient number, since it is larger than the sum of its proper divisors (17639899).

71021093 is a wasteful number, since it uses less digits than its factorization.

71021093 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 525.

The product of its (nonzero) digits is 378, while the sum is 23.

The square root of 71021093 is about 8427.4013195053. The cubic root of 71021093 is about 414.1227766422.

The spelling of 71021093 in words is "seventy-one million, twenty-one thousand, ninety-three".