20054465 has 4 divisors (see below), whose sum is σ = 24065364. Its totient is φ = 16043568.

The previous prime is 20054431. The next prime is 20054467. The reversal of 20054465 is 56445002.

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 2380849 + 17673616 = 1543^2 + 4204^2 .

It is a cyclic number.

It is not a de Polignac number, because 20054465 - 2⁶ = 20054401 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20054467) 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, 2005442 + ... + 2005451.

It is an arithmetic number, because the mean of its divisors is an integer number (6016341).

Almost surely, 2^20054465 is an apocalyptic number.

It is an amenable number.

20054465 is a deficient number, since it is larger than the sum of its proper divisors (4010899).

20054465 is an equidigital number, since it uses as much as digits as its factorization.

20054465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4010898.

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 20054465 is about 4478.2211870340. The cubic root of 20054465 is about 271.6879395857.

Adding to 20054465 its reverse (56445002), we get a palindrome (76499467).

The spelling of 20054465 in words is "twenty million, fifty-four thousand, four hundred sixty-five".