85220753 has 2 divisors, whose sum is σ = 85220754. Its totient is φ = 85220752.

The previous prime is 85220749. The next prime is 85220777. The reversal of 85220753 is 35702258.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 54937744 + 30283009 = 7412^2 + 5503^2 .

It is a cyclic number.

It is not a de Polignac number, because 85220753 - 2² = 85220749 is a prime.

It is a super-3 number, since 3×85220753³ (a number of 25 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (85220783) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42610376 + 42610377.

It is an arithmetic number, because the mean of its divisors is an integer number (42610377).

Almost surely, 2^85220753 is an apocalyptic number.

It is an amenable number.

85220753 is a deficient number, since it is larger than the sum of its proper divisors (1).

85220753 is an equidigital number, since it uses as much as digits as its factorization.

85220753 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16800, while the sum is 32.

The square root of 85220753 is about 9231.5087065983. The cubic root of 85220753 is about 440.0632708601.

The spelling of 85220753 in words is "eighty-five million, two hundred twenty thousand, seven hundred fifty-three".