85555497 has 8 divisors (see below), whose sum is σ = 115680960. Its totient is φ = 56233520.

The previous prime is 85555471. The next prime is 85555501. The reversal of 85555497 is 79455558.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 85555497 - 2¹¹ = 85553449 is a prime.

It is not an unprimeable number, because it can be changed into a prime (85555417) 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 in 7 ways as a sum of consecutive naturals, for example, 200622 + ... + 201047.

It is an arithmetic number, because the mean of its divisors is an integer number (14460120).

Almost surely, 2^85555497 is an apocalyptic number.

It is an amenable number.

85555497 is a deficient number, since it is larger than the sum of its proper divisors (30125463).

85555497 is a wasteful number, since it uses less digits than its factorization.

85555497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 401743.

The product of its digits is 1260000, while the sum is 48.

The square root of 85555497 is about 9249.6214517136. The cubic root of 85555497 is about 440.6387022347.

The spelling of 85555497 in words is "eighty-five million, five hundred fifty-five thousand, four hundred ninety-seven".