20409053 has 8 divisors (see below), whose sum is σ = 23403072. Its totient is φ = 17434656.

The previous prime is 20409041. The next prime is 20409079. The reversal of 20409053 is 35090402.

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 20409053 - 2⁶ = 20408989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20409013) 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, 2600 + ... + 6897.

It is an arithmetic number, because the mean of its divisors is an integer number (2925384).

Almost surely, 2^20409053 is an apocalyptic number.

It is an amenable number.

20409053 is a deficient number, since it is larger than the sum of its proper divisors (2994019).

20409053 is an equidigital number, since it uses as much as digits as its factorization.

20409053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9811.

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 20409053 is about 4517.6379890381. The cubic root of 20409053 is about 273.2798545317.

Adding to 20409053 its reverse (35090402), we get a palindrome (55499455).

The spelling of 20409053 in words is "twenty million, four hundred nine thousand, fifty-three".