20548137 has 16 divisors (see below), whose sum is σ = 27933440. Its totient is φ = 13433472.

The previous prime is 20548117. The next prime is 20548141. The reversal of 20548137 is 73184502.

It is not a de Polignac number, because 20548137 - 2⁸ = 20547881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20548117) by changing a digit.

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 in 15 ways as a sum of consecutive naturals, for example, 65493 + ... + 65805.

It is an arithmetic number, because the mean of its divisors is an integer number (1745840).

Almost surely, 2^20548137 is an apocalyptic number.

It is an amenable number.

20548137 is a deficient number, since it is larger than the sum of its proper divisors (7385303).

20548137 is a wasteful number, since it uses less digits than its factorization.

20548137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 672.

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 20548137 is about 4533.0052945039. The cubic root of 20548137 is about 273.8992339078.

The spelling of 20548137 in words is "twenty million, five hundred forty-eight thousand, one hundred thirty-seven".