85369057 has 2 divisors, whose sum is σ = 85369058. Its totient is φ = 85369056.

The previous prime is 85369049. The next prime is 85369079. The reversal of 85369057 is 75096358.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 80568576 + 4800481 = 8976^2 + 2191^2 .

It is a cyclic number.

It is not a de Polignac number, because 85369057 - 2³ = 85369049 is a prime.

It is not a weakly prime, because it can be changed into another prime (85369007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42684528 + 42684529.

It is an arithmetic number, because the mean of its divisors is an integer number (42684529).

Almost surely, 2^85369057 is an apocalyptic number.

It is an amenable number.

85369057 is a deficient number, since it is larger than the sum of its proper divisors (1).

85369057 is an equidigital number, since it uses as much as digits as its factorization.

85369057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 226800, while the sum is 43.

The square root of 85369057 is about 9239.5377048855. The cubic root of 85369057 is about 440.3183938588.

The spelling of 85369057 in words is "eighty-five million, three hundred sixty-nine thousand, fifty-seven".