71600251 has 4 divisors (see below), whose sum is σ = 71619904. Its totient is φ = 71580600.

The previous prime is 71600237. The next prime is 71600261. The reversal of 71600251 is 15200617.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 71600251 - 2¹⁷ = 71469179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71600261) 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, 2580 + ... + 12241.

It is an arithmetic number, because the mean of its divisors is an integer number (17904976).

Almost surely, 2^71600251 is an apocalyptic number.

71600251 is a deficient number, since it is larger than the sum of its proper divisors (19653).

71600251 is a wasteful number, since it uses less digits than its factorization.

71600251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19652.

The product of its (nonzero) digits is 420, while the sum is 22.

The square root of 71600251 is about 8461.6931520825. The cubic root of 71600251 is about 415.2454173306.

Adding to 71600251 its reverse (15200617), we get a palindrome (86800868).

The spelling of 71600251 in words is "seventy-one million, six hundred thousand, two hundred fifty-one".