20061485 has 4 divisors (see below), whose sum is σ = 24073788. Its totient is φ = 16049184.

The previous prime is 20061449. The next prime is 20061491. The reversal of 20061485 is 58416002.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 58416002 = 2 ⋅29208001.

It can be written as a sum of positive squares in 2 ways, for example, as 6651241 + 13410244 = 2579^2 + 3662^2 .

It is a cyclic number.

It is not a de Polignac number, because 20061485 - 2¹⁰ = 20060461 is a prime.

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 3 ways as a sum of consecutive naturals, for example, 2006144 + ... + 2006153.

It is an arithmetic number, because the mean of its divisors is an integer number (6018447).

Almost surely, 2^20061485 is an apocalyptic number.

It is an amenable number.

20061485 is a deficient number, since it is larger than the sum of its proper divisors (4012303).

20061485 is an equidigital number, since it uses as much as digits as its factorization.

20061485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4012302.

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 20061485 is about 4479.0049118080. The cubic root of 20061485 is about 271.7196370462.

Adding to 20061485 its reverse (58416002), we get a palindrome (78477487).

The spelling of 20061485 in words is "twenty million, sixty-one thousand, four hundred eighty-five".