20854755 has 24 divisors (see below), whose sum is σ = 36693072. Its totient is φ = 10954944.

The previous prime is 20854739. The next prime is 20854843. The reversal of 20854755 is 55745802.

It is a happy number.

It is not a de Polignac number, because 20854755 - 2⁴ = 20854739 is a prime.

It is a super-2 number, since 2×20854755² = 869841612220050, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 444 + ... + 6473.

It is an arithmetic number, because the mean of its divisors is an integer number (1528878).

Almost surely, 2^20854755 is an apocalyptic number.

20854755 is a deficient number, since it is larger than the sum of its proper divisors (15838317).

20854755 is a wasteful number, since it uses less digits than its factorization.

20854755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6995 (or 6992 counting only the distinct ones).

The product of its (nonzero) digits is 56000, while the sum is 36.

The square root of 20854755 is about 4566.7006689732. The cubic root of 20854755 is about 275.2548821483.

It can be divided in two parts, 20854 and 755, that added together give a square (21609 = 147²).

The spelling of 20854755 in words is "twenty million, eight hundred fifty-four thousand, seven hundred fifty-five".