85401441 has 6 divisors (see below), whose sum is σ = 123357650. Its totient is φ = 56934288.

The previous prime is 85401431. The next prime is 85401443. The reversal of 85401441 is 14410458.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 74649600 + 10751841 = 8640^2 + 3279^2 .

It is not a de Polignac number, because 85401441 - 2⁶ = 85401377 is a prime.

It is a super-2 number, since 2×85401441² = 14586812249752962, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (85401443) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4744516 + ... + 4744533.

Almost surely, 2^85401441 is an apocalyptic number.

It is an amenable number.

85401441 is a deficient number, since it is larger than the sum of its proper divisors (37956209).

85401441 is a wasteful number, since it uses less digits than its factorization.

85401441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9489055 (or 9489052 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 27.

The square root of 85401441 is about 9241.2900073529. The cubic root of 85401441 is about 440.3740637885.

Adding to 85401441 its reverse (14410458), we get a palindrome (99811899).

The spelling of 85401441 in words is "eighty-five million, four hundred one thousand, four hundred forty-one".