20554069 has 8 divisors (see below), whose sum is σ = 21420000. Its totient is φ = 19698672.

The previous prime is 20554063. The next prime is 20554073. The reversal of 20554069 is 96045502.

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

It is a cyclic number.

It is not a de Polignac number, because 20554069 - 2⁷ = 20553941 is a prime.

It is a super-4 number, since 4×20554069⁴ (a number of 30 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20554069.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20554063) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1482 + ... + 6580.

It is an arithmetic number, because the mean of its divisors is an integer number (2677500).

Almost surely, 2^20554069 is an apocalyptic number.

20554069 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

20554069 is a deficient number, since it is larger than the sum of its proper divisors (865931).

20554069 is a wasteful number, since it uses less digits than its factorization.

20554069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5267.

The product of its (nonzero) digits is 10800, while the sum is 31.

The square root of 20554069 is about 4533.6595593406. The cubic root of 20554069 is about 273.9255885100.

The spelling of 20554069 in words is "twenty million, five hundred fifty-four thousand, sixty-nine".