71722751 has 2 divisors, whose sum is σ = 71722752. Its totient is φ = 71722750.

The previous prime is 71722733. The next prime is 71722769. The reversal of 71722751 is 15722717.

It is a balanced prime because it is at equal distance from previous prime (71722733) and next prime (71722769).

It is an emirp because it is prime and its reverse (15722717) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 71722751 - 2¹⁸ = 71460607 is a prime.

It is a super-2 number, since 2×71722751² = 10288306022016002, which contains 22 as substring.

It is a plaindrome in base 16.

It is a zygodrome in base 16.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71722051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35861375 + 35861376.

It is an arithmetic number, because the mean of its divisors is an integer number (35861376).

Almost surely, 2^71722751 is an apocalyptic number.

71722751 is a deficient number, since it is larger than the sum of its proper divisors (1).

71722751 is an equidigital number, since it uses as much as digits as its factorization.

71722751 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6860, while the sum is 32.

The square root of 71722751 is about 8468.9285626932. The cubic root of 71722751 is about 415.4820951862.

The spelling of 71722751 in words is "seventy-one million, seven hundred twenty-two thousand, seven hundred fifty-one".