71250011 has 16 divisors (see below), whose sum is σ = 84589824. Its totient is φ = 58744224.

The previous prime is 71250007. The next prime is 71250017. The reversal of 71250011 is 11005217.

It is not a de Polignac number, because 71250011 - 2² = 71250007 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71250017) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18401 + ... + 21933.

It is an arithmetic number, because the mean of its divisors is an integer number (5286864).

Almost surely, 2^71250011 is an apocalyptic number.

71250011 is a deficient number, since it is larger than the sum of its proper divisors (13339813).

71250011 is a wasteful number, since it uses less digits than its factorization.

71250011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3650.

The product of its (nonzero) digits is 70, while the sum is 17.

The square root of 71250011 is about 8440.9721596508. The cubic root of 71250011 is about 414.5672384269.

Adding to 71250011 its reverse (11005217), we get a palindrome (82255228).

The spelling of 71250011 in words is "seventy-one million, two hundred fifty thousand, eleven".