71161451 has 2 divisors, whose sum is σ = 71161452. Its totient is φ = 71161450.

The previous prime is 71161429. The next prime is 71161459. The reversal of 71161451 is 15416117.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (15416117) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-71161451 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 71161451.

It is not a weakly prime, because it can be changed into another prime (71161459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35580725 + 35580726.

It is an arithmetic number, because the mean of its divisors is an integer number (35580726).

Almost surely, 2^71161451 is an apocalyptic number.

71161451 is a deficient number, since it is larger than the sum of its proper divisors (1).

71161451 is an equidigital number, since it uses as much as digits as its factorization.

71161451 is an evil number, because the sum of its binary digits is even.

The product of its digits is 840, while the sum is 26.

The square root of 71161451 is about 8435.7246873046. The cubic root of 71161451 is about 414.3954054880.

Adding to 71161451 its reverse (15416117), we get a palindrome (86577568).

The spelling of 71161451 in words is "seventy-one million, one hundred sixty-one thousand, four hundred fifty-one".