71372011 has 4 divisors (see below), whose sum is σ = 71574552. Its totient is φ = 71169472.

The previous prime is 71372009. The next prime is 71372023. The reversal of 71372011 is 11027317.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11027317 = 7 ⋅1575331.

It is a cyclic number.

It is not a de Polignac number, because 71372011 - 2¹ = 71372009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71372051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 100741 + ... + 101446.

It is an arithmetic number, because the mean of its divisors is an integer number (17893638).

Almost surely, 2^71372011 is an apocalyptic number.

71372011 is a deficient number, since it is larger than the sum of its proper divisors (202541).

71372011 is a wasteful number, since it uses less digits than its factorization.

71372011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202540.

The product of its (nonzero) digits is 294, while the sum is 22.

The square root of 71372011 is about 8448.1957245320. The cubic root of 71372011 is about 414.8037219603.

Adding to 71372011 its reverse (11027317), we get a palindrome (82399328).

The spelling of 71372011 in words is "seventy-one million, three hundred seventy-two thousand, eleven".