85576429 has 2 divisors, whose sum is σ = 85576430. Its totient is φ = 85576428.

The previous prime is 85576333. The next prime is 85576433. The reversal of 85576429 is 92467558.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 67683529 + 17892900 = 8227^2 + 4230^2 .

It is a cyclic number.

It is not a de Polignac number, because 85576429 - 2¹¹ = 85574381 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85576459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42788214 + 42788215.

It is an arithmetic number, because the mean of its divisors is an integer number (42788215).

Almost surely, 2^85576429 is an apocalyptic number.

It is an amenable number.

85576429 is a deficient number, since it is larger than the sum of its proper divisors (1).

85576429 is an equidigital number, since it uses as much as digits as its factorization.

85576429 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 604800, while the sum is 46.

The square root of 85576429 is about 9250.7528882789. The cubic root of 85576429 is about 440.6746348459.

It can be divided in two parts, 855 and 76429, that added together give a square (77284 = 278²).

The spelling of 85576429 in words is "eighty-five million, five hundred seventy-six thousand, four hundred twenty-nine".