985501 has 4 divisors (see below), whose sum is σ = 1075104. Its totient is φ = 895900.

The previous prime is 985499. The next prime is 985519. The reversal of 985501 is 105589.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 985501 - 2¹ = 985499 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 985501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (985531) 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 in 3 ways as a sum of consecutive naturals, for example, 44785 + ... + 44806.

It is an arithmetic number, because the mean of its divisors is an integer number (268776).

2⁹⁸⁵⁵⁰¹ is an apocalyptic number.

It is an amenable number.

985501 is a deficient number, since it is larger than the sum of its proper divisors (89603).

985501 is a wasteful number, since it uses less digits than its factorization.

985501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89602.

The product of its (nonzero) digits is 1800, while the sum is 28.

The square root of 985501 is about 992.7240301312. The cubic root of 985501 is about 99.5143452125.

The spelling of 985501 in words is "nine hundred eighty-five thousand, five hundred one".