20455353 has 24 divisors (see below), whose sum is σ = 30805320. Its totient is φ = 13063680.

The previous prime is 20455327. The next prime is 20455361. The reversal of 20455353 is 35355402.

It can be written as a sum of positive squares in 4 ways, for example, as 501264 + 19954089 = 708^2 + 4467^2 .

It is not a de Polignac number, because 20455353 - 2⁵ = 20455321 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20455363) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 47025 + ... + 47457.

It is an arithmetic number, because the mean of its divisors is an integer number (1283555).

Almost surely, 2^20455353 is an apocalyptic number.

It is an amenable number.

20455353 is a deficient number, since it is larger than the sum of its proper divisors (10349967).

20455353 is a wasteful number, since it uses less digits than its factorization.

20455353 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 649 (or 646 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 27.

The square root of 20455353 is about 4522.7594452944. The cubic root of 20455353 is about 273.4863527821.

The spelling of 20455353 in words is "twenty million, four hundred fifty-five thousand, three hundred fifty-three".