71267051 has 4 divisors (see below), whose sum is σ = 71286432. Its totient is φ = 71247672.

The previous prime is 71266999. The next prime is 71267059. The reversal of 71267051 is 15076217.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15076217 = 13 ⋅1159709.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-71267051 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71267059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2291 + ... + 12156.

It is an arithmetic number, because the mean of its divisors is an integer number (17821608).

Almost surely, 2^71267051 is an apocalyptic number.

71267051 is a deficient number, since it is larger than the sum of its proper divisors (19381).

71267051 is a wasteful number, since it uses less digits than its factorization.

71267051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19380.

The product of its (nonzero) digits is 2940, while the sum is 29.

The square root of 71267051 is about 8441.9814617186. The cubic root of 71267051 is about 414.6002847969.

The spelling of 71267051 in words is "seventy-one million, two hundred sixty-seven thousand, fifty-one".