85723751 has 2 divisors, whose sum is σ = 85723752. Its totient is φ = 85723750.

The previous prime is 85723717. The next prime is 85723787. The reversal of 85723751 is 15732758.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 85723751 - 2¹⁰ = 85722727 is a prime.

It is a super-2 number, since 2×85723751² = 14697122971020002, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85723051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42861875 + 42861876.

It is an arithmetic number, because the mean of its divisors is an integer number (42861876).

Almost surely, 2^85723751 is an apocalyptic number.

85723751 is a deficient number, since it is larger than the sum of its proper divisors (1).

85723751 is an equidigital number, since it uses as much as digits as its factorization.

85723751 is an evil number, because the sum of its binary digits is even.

The product of its digits is 58800, while the sum is 38.

The square root of 85723751 is about 9258.7121674669. The cubic root of 85723751 is about 440.9273674051.

The spelling of 85723751 in words is "eighty-five million, seven hundred twenty-three thousand, seven hundred fifty-one".