71154891 has 6 divisors (see below), whose sum is σ = 102779300. Its totient is φ = 47436588.

The previous prime is 71154869. The next prime is 71154907. The reversal of 71154891 is 19845117.

It is not a de Polignac number, because 71154891 - 2¹⁹ = 70630603 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71154691) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3953041 + ... + 3953058.

Almost surely, 2^71154891 is an apocalyptic number.

71154891 is a deficient number, since it is larger than the sum of its proper divisors (31624409).

71154891 is a wasteful number, since it uses less digits than its factorization.

71154891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7906105 (or 7906102 counting only the distinct ones).

The product of its digits is 10080, while the sum is 36.

The square root of 71154891 is about 8435.3358557914. The cubic root of 71154891 is about 414.3826714522.

The spelling of 71154891 in words is "seventy-one million, one hundred fifty-four thousand, eight hundred ninety-one".