20554532 has 6 divisors (see below), whose sum is σ = 35970438. Its totient is φ = 10277264.

The previous prime is 20554529. The next prime is 20554549. The reversal of 20554532 is 23545502.

It can be written as a sum of positive squares in only one way, i.e., 20124196 + 430336 = 4486^2 + 656^2 .

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, 2569313 + ... + 2569320.

It is an arithmetic number, because the mean of its divisors is an integer number (5995073).

Almost surely, 2^20554532 is an apocalyptic number.

It is an amenable number.

20554532 is a deficient number, since it is larger than the sum of its proper divisors (15415906).

20554532 is a wasteful number, since it uses less digits than its factorization.

20554532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5138637 (or 5138635 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 26.

The square root of 20554532 is about 4533.7106215549. The cubic root of 20554532 is about 273.9276453063.

The spelling of 20554532 in words is "twenty million, five hundred fifty-four thousand, five hundred thirty-two".