71051061 has 4 divisors (see below), whose sum is σ = 94734752. Its totient is φ = 47367372.

The previous prime is 71051059. The next prime is 71051083. The reversal of 71051061 is 16015017.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 71051061 - 2¹ = 71051059 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71051011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11841841 + ... + 11841846.

It is an arithmetic number, because the mean of its divisors is an integer number (23683688).

Almost surely, 2^71051061 is an apocalyptic number.

It is an amenable number.

71051061 is a deficient number, since it is larger than the sum of its proper divisors (23683691).

71051061 is a wasteful number, since it uses less digits than its factorization.

71051061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23683690.

The product of its (nonzero) digits is 210, while the sum is 21.

The square root of 71051061 is about 8429.1791415297. The cubic root of 71051061 is about 414.1810160830.

Adding to 71051061 its reverse (16015017), we get a palindrome (87066078).

The spelling of 71051061 in words is "seventy-one million, fifty-one thousand, sixty-one".