71488751 has 2 divisors, whose sum is σ = 71488752. Its totient is φ = 71488750.

The previous prime is 71488721. The next prime is 71488771. The reversal of 71488751 is 15788417.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 71488751 - 2⁶ = 71488687 is a prime.

It is a super-2 number, since 2×71488751² = 10221283039080002, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 71488699 and 71488708.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71488721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35744375 + 35744376.

It is an arithmetic number, because the mean of its divisors is an integer number (35744376).

Almost surely, 2^71488751 is an apocalyptic number.

71488751 is a deficient number, since it is larger than the sum of its proper divisors (1).

71488751 is an equidigital number, since it uses as much as digits as its factorization.

71488751 is an evil number, because the sum of its binary digits is even.

The product of its digits is 62720, while the sum is 41.

The square root of 71488751 is about 8455.1020691651. The cubic root of 71488751 is about 415.0297573862.

The spelling of 71488751 in words is "seventy-one million, four hundred eighty-eight thousand, seven hundred fifty-one".