20524055 has 4 divisors (see below), whose sum is σ = 24628872. Its totient is φ = 16419240.

The previous prime is 20524039. The next prime is 20524061. The reversal of 20524055 is 55042502.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 55042502 = 2 ⋅27521251.

It is not a de Polignac number, because 20524055 - 2⁴ = 20524039 is a prime.

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 20524055.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2052401 + ... + 2052410.

It is an arithmetic number, because the mean of its divisors is an integer number (6157218).

Almost surely, 2^20524055 is an apocalyptic number.

20524055 is a deficient number, since it is larger than the sum of its proper divisors (4104817).

20524055 is an equidigital number, since it uses as much as digits as its factorization.

20524055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4104816.

The product of its (nonzero) digits is 2000, while the sum is 23.

The square root of 20524055 is about 4530.3482206117. The cubic root of 20524055 is about 273.7921906296.

Adding to 20524055 its reverse (55042502), we get a palindrome (75566557).

The spelling of 20524055 in words is "twenty million, five hundred twenty-four thousand, fifty-five".