20424055 has 8 divisors (see below), whose sum is σ = 25950672. Its totient is φ = 15378048.

The previous prime is 20424049. The next prime is 20424067. The reversal of 20424055 is 55042402.

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 20424055 - 2⁷ = 20423927 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 7 ways as a sum of consecutive naturals, for example, 120057 + ... + 120226.

It is an arithmetic number, because the mean of its divisors is an integer number (3243834).

Almost surely, 2^20424055 is an apocalyptic number.

20424055 is a deficient number, since it is larger than the sum of its proper divisors (5526617).

20424055 is a wasteful number, since it uses less digits than its factorization.

20424055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240305.

The product of its (nonzero) digits is 1600, while the sum is 22.

The square root of 20424055 is about 4519.2980649654. The cubic root of 20424055 is about 273.3467977041.

Adding to 20424055 its reverse (55042402), we get a palindrome (75466457).

The spelling of 20424055 in words is "twenty million, four hundred twenty-four thousand, fifty-five".