71403481 has 8 divisors (see below), whose sum is σ = 75438720. Its totient is φ = 67473168.

The previous prime is 71403473. The next prime is 71403487. The reversal of 71403481 is 18430417.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 71403481 - 2³ = 71403473 is a prime.

It is a super-2 number, since 2×71403481² = 10196914197834722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71403487) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24831 + ... + 27556.

It is an arithmetic number, because the mean of its divisors is an integer number (9429840).

Almost surely, 2^71403481 is an apocalyptic number.

It is an amenable number.

71403481 is a deficient number, since it is larger than the sum of its proper divisors (4035239).

71403481 is a wasteful number, since it uses less digits than its factorization.

71403481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52463.

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 71403481 is about 8450.0580471379. The cubic root of 71403481 is about 414.8646793525.

Adding to 71403481 its reverse (18430417), we get a palindrome (89833898).

The spelling of 71403481 in words is "seventy-one million, four hundred three thousand, four hundred eighty-one".