20550153 has 16 divisors (see below), whose sum is σ = 31062080. Its totient is φ = 11980224.

The previous prime is 20550121. The next prime is 20550199. The reversal of 20550153 is 35105502.

It is not a de Polignac number, because 20550153 - 2⁵ = 20550121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20550253) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13126 + ... + 14607.

It is an arithmetic number, because the mean of its divisors is an integer number (1941380).

Almost surely, 2^20550153 is an apocalyptic number.

It is an amenable number.

20550153 is a deficient number, since it is larger than the sum of its proper divisors (10511927).

20550153 is a wasteful number, since it uses less digits than its factorization.

20550153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27768.

The product of its (nonzero) digits is 750, while the sum is 21.

The square root of 20550153 is about 4533.2276580820. The cubic root of 20550153 is about 273.9081911318.

Adding to 20550153 its reverse (35105502), we get a palindrome (55655655).

The spelling of 20550153 in words is "twenty million, five hundred fifty thousand, one hundred fifty-three".