71461571 has 16 divisors (see below), whose sum is σ = 75271680. Its totient is φ = 67784640.

The previous prime is 71461517. The next prime is 71461601. The reversal of 71461571 is 17516417.

It is a cyclic number.

It is not a de Polignac number, because 71461571 - 2²⁶ = 4352707 is a prime.

It is a super-2 number, since 2×71461571² = 10213512259576082, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71461501) 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 15 ways as a sum of consecutive naturals, for example, 271586 + ... + 271848.

It is an arithmetic number, because the mean of its divisors is an integer number (4704480).

Almost surely, 2^71461571 is an apocalyptic number.

71461571 is a gapful number since it is divisible by the number (71) formed by its first and last digit.

71461571 is a deficient number, since it is larger than the sum of its proper divisors (3810109).

71461571 is a wasteful number, since it uses less digits than its factorization.

71461571 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 466.

The product of its digits is 5880, while the sum is 32.

The square root of 71461571 is about 8453.4946028255. The cubic root of 71461571 is about 414.9771526591.

Adding to 71461571 its reverse (17516417), we get a palindrome (88977988).

The spelling of 71461571 in words is "seventy-one million, four hundred sixty-one thousand, five hundred seventy-one".