76221751 has 8 divisors (see below), whose sum is σ = 77168000. Its totient is φ = 75279672.

The previous prime is 76221721. The next prime is 76221763. The reversal of 76221751 is 15712267.

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 76221751 - 2²⁵ = 42667319 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76221721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50656 + ... + 52138.

It is an arithmetic number, because the mean of its divisors is an integer number (9646000).

Almost surely, 2^76221751 is an apocalyptic number.

76221751 is a deficient number, since it is larger than the sum of its proper divisors (946249).

76221751 is a wasteful number, since it uses less digits than its factorization.

76221751 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2085.

The product of its digits is 5880, while the sum is 31.

The square root of 76221751 is about 8730.5069154087. The cubic root of 76221751 is about 423.9939312499.

The spelling of 76221751 in words is "seventy-six million, two hundred twenty-one thousand, seven hundred fifty-one".