20535485 has 24 divisors (see below), whose sum is σ = 26919936. Its totient is φ = 15020640.

The previous prime is 20535479. The next prime is 20535499. The reversal of 20535485 is 58453502.

It is not a de Polignac number, because 20535485 - 2⁴ = 20535469 is a prime.

It is a super-2 number, since 2×20535485² = 843412288370450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 55772 + ... + 56138.

It is an arithmetic number, because the mean of its divisors is an integer number (1121664).

Almost surely, 2^20535485 is an apocalyptic number.

It is an amenable number.

20535485 is a deficient number, since it is larger than the sum of its proper divisors (6384451).

20535485 is a wasteful number, since it uses less digits than its factorization.

20535485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 441 (or 422 counting only the distinct ones).

The product of its (nonzero) digits is 24000, while the sum is 32.

The square root of 20535485 is about 4531.6095374602. The cubic root of 20535485 is about 273.8430068382.

Adding to 20535485 its reverse (58453502), we get a palindrome (78988987).

The spelling of 20535485 in words is "twenty million, five hundred thirty-five thousand, four hundred eighty-five".