985541 has 4 divisors (see below), whose sum is σ = 1043532. Its totient is φ = 927552.

The previous prime is 985531. The next prime is 985547. The reversal of 985541 is 145589.

985541 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 429025 + 556516 = 655^2 + 746^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-985541 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 985498 and 985507.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 985541.

It is not an unprimeable number, because it can be changed into a prime (985547) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28970 + ... + 29003.

It is an arithmetic number, because the mean of its divisors is an integer number (260883).

2⁹⁸⁵⁵⁴¹ is an apocalyptic number.

It is an amenable number.

985541 is a deficient number, since it is larger than the sum of its proper divisors (57991).

985541 is a wasteful number, since it uses less digits than its factorization.

985541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57990.

The product of its digits is 7200, while the sum is 32.

The square root of 985541 is about 992.7441765128. The cubic root of 985541 is about 99.5156915734.

The spelling of 985541 in words is "nine hundred eighty-five thousand, five hundred forty-one".