85553497 has 2 divisors, whose sum is σ = 85553498. Its totient is φ = 85553496.

The previous prime is 85553449. The next prime is 85553513. The reversal of 85553497 is 79435558.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 65626201 + 19927296 = 8101^2 + 4464^2 .

It is a cyclic number.

It is not a de Polignac number, because 85553497 - 2¹⁹ = 85029209 is a prime.

It is not a weakly prime, because it can be changed into another prime (85553407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42776748 + 42776749.

It is an arithmetic number, because the mean of its divisors is an integer number (42776749).

Almost surely, 2^85553497 is an apocalyptic number.

It is an amenable number.

85553497 is a deficient number, since it is larger than the sum of its proper divisors (1).

85553497 is an equidigital number, since it uses as much as digits as its factorization.

85553497 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 756000, while the sum is 46.

The square root of 85553497 is about 9249.5133385492. The cubic root of 85553497 is about 440.6352686573.

The spelling of 85553497 in words is "eighty-five million, five hundred fifty-three thousand, four hundred ninety-seven".