71671451 has 2 divisors, whose sum is σ = 71671452. Its totient is φ = 71671450.

The previous prime is 71671429. The next prime is 71671463. The reversal of 71671451 is 15417617.

It is a strong prime.

It is an emirp because it is prime and its reverse (15417617) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 71671451 - 2⁶ = 71671387 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (71671471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35835725 + 35835726.

It is an arithmetic number, because the mean of its divisors is an integer number (35835726).

Almost surely, 2^71671451 is an apocalyptic number.

71671451 is a deficient number, since it is larger than the sum of its proper divisors (1).

71671451 is an equidigital number, since it uses as much as digits as its factorization.

71671451 is an evil number, because the sum of its binary digits is even.

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

The square root of 71671451 is about 8465.8993024959. The cubic root of 71671451 is about 415.3830131195.

The spelling of 71671451 in words is "seventy-one million, six hundred seventy-one thousand, four hundred fifty-one".