71081451 has 48 divisors (see below), whose sum is σ = 126480640. Its totient is φ = 37558080.

The previous prime is 71081429. The next prime is 71081459. The reversal of 71081451 is 15418017.

It is not a de Polignac number, because 71081451 - 2⁹ = 71080939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71081459) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 50781 + ... + 52161.

Almost surely, 2^71081451 is an apocalyptic number.

71081451 is a deficient number, since it is larger than the sum of its proper divisors (55399189).

71081451 is a wasteful number, since it uses less digits than its factorization.

71081451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1456 (or 1453 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 27.

The square root of 71081451 is about 8430.9816154467. The cubic root of 71081451 is about 414.2400589120.

Adding to 71081451 its reverse (15418017), we get a palindrome (86499468).

The spelling of 71081451 in words is "seventy-one million, eighty-one thousand, four hundred fifty-one".