71112051 has 24 divisors (see below), whose sum is σ = 105246960. Its totient is φ = 46253376.

The previous prime is 71112049. The next prime is 71112073. The reversal of 71112051 is 15021117.

It is a happy number.

It is not a de Polignac number, because 71112051 - 2¹ = 71112049 is a prime.

It is not an unprimeable number, because it can be changed into a prime (71112011) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 82941 + ... + 83793.

It is an arithmetic number, because the mean of its divisors is an integer number (4385290).

Almost surely, 2^71112051 is an apocalyptic number.

71112051 is a deficient number, since it is larger than the sum of its proper divisors (34134909).

71112051 is a wasteful number, since it uses less digits than its factorization.

71112051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1075 (or 1072 counting only the distinct ones).

The product of its (nonzero) digits is 70, while the sum is 18.

The square root of 71112051 is about 8432.7961554872. The cubic root of 71112051 is about 414.2994927358.

Adding to 71112051 its reverse (15021117), we get a palindrome (86133168).

The spelling of 71112051 in words is "seventy-one million, one hundred twelve thousand, fifty-one".