20553026 has 8 divisors (see below), whose sum is σ = 33201084. Its totient is φ = 9486000.

The previous prime is 20553023. The next prime is 20553047. The reversal of 20553026 is 62035502.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 19228225 + 1324801 = 4385^2 + 1151^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 20552992 and 20553010.

It is not an unprimeable number, because it can be changed into a prime (20553023) 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, 395225 + ... + 395276.

Almost surely, 2^20553026 is an apocalyptic number.

20553026 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

20553026 is a deficient number, since it is larger than the sum of its proper divisors (12648058).

20553026 is a wasteful number, since it uses less digits than its factorization.

20553026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 790516.

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 20553026 is about 4533.5445293942. The cubic root of 20553026 is about 273.9209550524.

Adding to 20553026 its reverse (62035502), we get a palindrome (82588528).

The spelling of 20553026 in words is "twenty million, five hundred fifty-three thousand, twenty-six".