20532755 has 4 divisors (see below), whose sum is σ = 24639312. Its totient is φ = 16426200.

The previous prime is 20532751. The next prime is 20532769. The reversal of 20532755 is 55723502.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 20532755 - 2² = 20532751 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20532751) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2053271 + ... + 2053280.

It is an arithmetic number, because the mean of its divisors is an integer number (6159828).

Almost surely, 2^20532755 is an apocalyptic number.

20532755 is a deficient number, since it is larger than the sum of its proper divisors (4106557).

20532755 is an equidigital number, since it uses as much as digits as its factorization.

20532755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4106556.

The product of its (nonzero) digits is 10500, while the sum is 29.

The square root of 20532755 is about 4531.3083099696. The cubic root of 20532755 is about 273.8308713479.

The spelling of 20532755 in words is "twenty million, five hundred thirty-two thousand, seven hundred fifty-five".