71893751 has 2 divisors, whose sum is σ = 71893752. Its totient is φ = 71893750.

The previous prime is 71893741. The next prime is 71893763. The reversal of 71893751 is 15739817.

It is a weak prime.

It is an emirp because it is prime and its reverse (15739817) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 71893751 - 2¹⁴ = 71877367 is a prime.

It is a super-2 number, since 2×71893751² = 10337422865700002, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 71893699 and 71893708.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71893711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35946875 + 35946876.

It is an arithmetic number, because the mean of its divisors is an integer number (35946876).

Almost surely, 2^71893751 is an apocalyptic number.

71893751 is a deficient number, since it is larger than the sum of its proper divisors (1).

71893751 is an equidigital number, since it uses as much as digits as its factorization.

71893751 is an evil number, because the sum of its binary digits is even.

The product of its digits is 52920, while the sum is 41.

The square root of 71893751 is about 8479.0182804379. The cubic root of 71893751 is about 415.8120279186.

The spelling of 71893751 in words is "seventy-one million, eight hundred ninety-three thousand, seven hundred fifty-one".