20554465 has 8 divisors (see below), whose sum is σ = 24795648. Its totient is φ = 16356720.

The previous prime is 20554453. The next prime is 20554477. The reversal of 20554465 is 56445502.

It is an interprime number because it is at equal distance from previous prime (20554453) and next prime (20554477).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20554465 - 2⁷ = 20554337 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9807 + ... + 11716.

It is an arithmetic number, because the mean of its divisors is an integer number (3099456).

Almost surely, 2^20554465 is an apocalyptic number.

It is an amenable number.

20554465 is a deficient number, since it is larger than the sum of its proper divisors (4241183).

20554465 is a wasteful number, since it uses less digits than its factorization.

20554465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21719.

The product of its (nonzero) digits is 24000, while the sum is 31.

The square root of 20554465 is about 4533.7032324580. The cubic root of 20554465 is about 273.9273476725.

Adding to 20554465 its reverse (56445502), we get a palindrome (76999967).

The spelling of 20554465 in words is "twenty million, five hundred fifty-four thousand, four hundred sixty-five".