20551194 has 24 divisors (see below), whose sum is σ = 44684640. Its totient is φ = 6826248.

The previous prime is 20551183. The next prime is 20551207. The reversal of 20551194 is 49115502.

20551194 is a `hidden beast` number, since 20 + 551 + 1 + 94 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3667 + ... + 7385.

It is an arithmetic number, because the mean of its divisors is an integer number (1861860).

Almost surely, 2^20551194 is an apocalyptic number.

20551194 is an abundant number, since it is smaller than the sum of its proper divisors (24133446).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20551194 is a wasteful number, since it uses less digits than its factorization.

20551194 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4034 (or 4031 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 27.

The square root of 20551194 is about 4533.3424754810. The cubic root of 20551194 is about 273.9128161357.

Adding to 20551194 its reverse (49115502), we get a palindrome (69666696).

It can be divided in two parts, 2055 and 1194, that added together give a square (3249 = 57²).

The spelling of 20551194 in words is "twenty million, five hundred fifty-one thousand, one hundred ninety-four".