71493227 has 16 divisors (see below), whose sum is σ = 78624000. Its totient is φ = 64612512.

The previous prime is 71493203. The next prime is 71493229. The reversal of 71493227 is 72239417.

It is a cyclic number.

It is not a de Polignac number, because 71493227 - 2¹⁶ = 71427691 is a prime.

It is a super-2 number, since 2×71493227² = 10222563013747058, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (71493229) 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 15 ways as a sum of consecutive naturals, for example, 143024 + ... + 143522.

It is an arithmetic number, because the mean of its divisors is an integer number (4914000).

Almost surely, 2^71493227 is an apocalyptic number.

71493227 is a deficient number, since it is larger than the sum of its proper divisors (7130773).

71493227 is a wasteful number, since it uses less digits than its factorization.

71493227 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 722.

The product of its digits is 21168, while the sum is 35.

The square root of 71493227 is about 8455.3667572732. The cubic root of 71493227 is about 415.0384190493.

The spelling of 71493227 in words is "seventy-one million, four hundred ninety-three thousand, two hundred twenty-seven".