20202455 has 24 divisors (see below), whose sum is σ = 30375072. Its totient is φ = 12785472.

The previous prime is 20202451. The next prime is 20202461. The reversal of 20202455 is 55420202.

It is not a de Polignac number, because 20202455 - 2² = 20202451 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20202451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14 + ... + 6356.

It is an arithmetic number, because the mean of its divisors is an integer number (1265628).

Almost surely, 2^20202455 is an apocalyptic number.

20202455 is a deficient number, since it is larger than the sum of its proper divisors (10172617).

20202455 is a wasteful number, since it uses less digits than its factorization.

20202455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6375 (or 6368 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 20.

The square root of 20202455 is about 4494.7141177165. The cubic root of 20202455 is about 272.3546007703.

Adding to 20202455 its reverse (55420202), we get a palindrome (75622657).

The spelling of 20202455 in words is "twenty million, two hundred two thousand, four hundred fifty-five".