20552858 has 8 divisors (see below), whose sum is σ = 31251828. Its totient is φ = 10135584.

The previous prime is 20552843. The next prime is 20552879. The reversal of 20552858 is 85825502.

It can be written as a sum of positive squares in 2 ways, for example, as 19598329 + 954529 = 4427^2 + 977^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 70241 + ... + 70532.

Almost surely, 2^20552858 is an apocalyptic number.

20552858 is a deficient number, since it is larger than the sum of its proper divisors (10698970).

20552858 is a wasteful number, since it uses less digits than its factorization.

20552858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140848.

The product of its (nonzero) digits is 32000, while the sum is 35.

The square root of 20552858 is about 4533.5260008078. The cubic root of 20552858 is about 273.9202087090.

It can be divided in two parts, 2055 and 2858, that added together give a cube (4913 = 17³).

The spelling of 20552858 in words is "twenty million, five hundred fifty-two thousand, eight hundred fifty-eight".