20052455 has 4 divisors (see below), whose sum is σ = 24062952. Its totient is φ = 16041960.

The previous prime is 20052437. The next prime is 20052457. The reversal of 20052455 is 55425002.

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

It is not a de Polignac number, because 20052455 - 2¹⁰ = 20051431 is a prime.

It is a super-3 number, since 3×20052455³ (a number of 23 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20052455.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20052457) 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, 2005241 + ... + 2005250.

It is an arithmetic number, because the mean of its divisors is an integer number (6015738).

Almost surely, 2^20052455 is an apocalyptic number.

20052455 is a deficient number, since it is larger than the sum of its proper divisors (4010497).

20052455 is an equidigital number, since it uses as much as digits as its factorization.

20052455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4010496.

The product of its (nonzero) digits is 2000, while the sum is 23.

The square root of 20052455 is about 4477.9967619461. The cubic root of 20052455 is about 271.6788624549.

Adding to 20052455 its reverse (55425002), we get a palindrome (75477457).

The spelling of 20052455 in words is "twenty million, fifty-two thousand, four hundred fifty-five".