20535055 has 16 divisors (see below), whose sum is σ = 25502400. Its totient is φ = 15863040.

The previous prime is 20535049. The next prime is 20535061. The reversal of 20535055 is 55053502.

It is an interprime number because it is at equal distance from previous prime (20535049) and next prime (20535061).

It is not a de Polignac number, because 20535055 - 2⁹ = 20534543 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21886 + ... + 22804.

It is an arithmetic number, because the mean of its divisors is an integer number (1593900).

Almost surely, 2^20535055 is an apocalyptic number.

20535055 is a deficient number, since it is larger than the sum of its proper divisors (4967345).

20535055 is a wasteful number, since it uses less digits than its factorization.

20535055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1074.

The product of its (nonzero) digits is 3750, while the sum is 25.

The square root of 20535055 is about 4531.5620927005. The cubic root of 20535055 is about 273.8410954587.

Adding to 20535055 its reverse (55053502), we get a palindrome (75588557).

The spelling of 20535055 in words is "twenty million, five hundred thirty-five thousand, fifty-five".