71198481 has 4 divisors (see below), whose sum is σ = 94931312. Its totient is φ = 47465652.

The previous prime is 71198461. The next prime is 71198521. The reversal of 71198481 is 18489117.

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, and also an emirpimes, since its reverse is a distinct semiprime: 18489117 = 3 ⋅6163039.

It is not a de Polignac number, because 71198481 - 2⁶ = 71198417 is a prime.

It is a super-2 number, since 2×71198481² = 10138447393414722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71198461) 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, 11866411 + ... + 11866416.

It is an arithmetic number, because the mean of its divisors is an integer number (23732828).

Almost surely, 2^71198481 is an apocalyptic number.

It is an amenable number.

71198481 is a deficient number, since it is larger than the sum of its proper divisors (23732831).

71198481 is a wasteful number, since it uses less digits than its factorization.

71198481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23732830.

The product of its digits is 16128, while the sum is 39.

The square root of 71198481 is about 8437.9192340292. The cubic root of 71198481 is about 414.4672721177.

The spelling of 71198481 in words is "seventy-one million, one hundred ninety-eight thousand, four hundred eighty-one".