20554148 has 6 divisors (see below), whose sum is σ = 35969766. Its totient is φ = 10277072.

The previous prime is 20554123. The next prime is 20554151. The reversal of 20554148 is 84145502.

It can be written as a sum of positive squares in only one way, i.e., 17623204 + 2930944 = 4198^2 + 1712^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 20554148.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2569265 + ... + 2569272.

It is an arithmetic number, because the mean of its divisors is an integer number (5994961).

Almost surely, 2^20554148 is an apocalyptic number.

It is an amenable number.

20554148 is a deficient number, since it is larger than the sum of its proper divisors (15415618).

20554148 is a wasteful number, since it uses less digits than its factorization.

20554148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5138541 (or 5138539 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 29.

The square root of 20554148 is about 4533.6682719405. The cubic root of 20554148 is about 273.9259394559.

It can be divided in two parts, 20554 and 148, that added together give a palindrome (20702).

The spelling of 20554148 in words is "twenty million, five hundred fifty-four thousand, one hundred forty-eight".