20960255 has 4 divisors (see below), whose sum is σ = 25152312. Its totient is φ = 16768200.

The previous prime is 20960197. The next prime is 20960263. The reversal of 20960255 is 55206902.

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

It is not a de Polignac number, because 20960255 - 2¹⁰ = 20959231 is a prime.

It is a super-3 number, since 3×20960255³ (a number of 23 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2096021 + ... + 2096030.

It is an arithmetic number, because the mean of its divisors is an integer number (6288078).

Almost surely, 2^20960255 is an apocalyptic number.

20960255 is a deficient number, since it is larger than the sum of its proper divisors (4192057).

20960255 is an equidigital number, since it uses as much as digits as its factorization.

20960255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4192056.

The product of its (nonzero) digits is 5400, while the sum is 29.

The square root of 20960255 is about 4578.2371061359. The cubic root of 20960255 is about 275.7182546355.

The spelling of 20960255 in words is "twenty million, nine hundred sixty thousand, two hundred fifty-five".