71225751 has 8 divisors (see below), whose sum is σ = 95338224. Its totient is φ = 47298560.

The previous prime is 71225747. The next prime is 71225783. The reversal of 71225751 is 15752217.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 71225751 - 2² = 71225747 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71225701) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45420 + ... + 46961.

It is an arithmetic number, because the mean of its divisors is an integer number (11917278).

Almost surely, 2^71225751 is an apocalyptic number.

71225751 is a deficient number, since it is larger than the sum of its proper divisors (24112473).

71225751 is a wasteful number, since it uses less digits than its factorization.

71225751 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92641.

The product of its digits is 4900, while the sum is 30.

The square root of 71225751 is about 8439.5349990388. The cubic root of 71225751 is about 414.5201809235.

Adding to 71225751 its reverse (15752217), we get a palindrome (86977968).

The spelling of 71225751 in words is "seventy-one million, two hundred twenty-five thousand, seven hundred fifty-one".