20554671 has 4 divisors (see below), whose sum is σ = 27406232. Its totient is φ = 13703112.

The previous prime is 20554669. The next prime is 20554673. The reversal of 20554671 is 17645502.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (20554669) and next prime (20554673).

It is not a de Polignac number, because 20554671 - 2¹ = 20554669 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20554673) 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, 3425776 + ... + 3425781.

It is an arithmetic number, because the mean of its divisors is an integer number (6851558).

Almost surely, 2^20554671 is an apocalyptic number.

20554671 is a deficient number, since it is larger than the sum of its proper divisors (6851561).

20554671 is an equidigital number, since it uses as much as digits as its factorization.

20554671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6851560.

The product of its (nonzero) digits is 8400, while the sum is 30.

The square root of 20554671 is about 4533.7259511356. The cubic root of 20554671 is about 273.9282627834.

The spelling of 20554671 in words is "twenty million, five hundred fifty-four thousand, six hundred seventy-one".