20272553 has 12 divisors (see below), whose sum is σ = 23636928. Its totient is φ = 17032080.

The previous prime is 20272547. The next prime is 20272561. The reversal of 20272553 is 35527202.

It is not a de Polignac number, because 20272553 - 2⁶ = 20272489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20572553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19148 + ... + 20178.

It is an arithmetic number, because the mean of its divisors is an integer number (1969744).

Almost surely, 2^20272553 is an apocalyptic number.

It is an amenable number.

20272553 is a deficient number, since it is larger than the sum of its proper divisors (3364375).

20272553 is an equidigital number, since it uses as much as digits as its factorization.

20272553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1144 (or 1091 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 26.

The square root of 20272553 is about 4502.5051915573. The cubic root of 20272553 is about 272.6692403225.

Adding to 20272553 its reverse (35527202), we get a palindrome (55799755).

The spelling of 20272553 in words is "twenty million, two hundred seventy-two thousand, five hundred fifty-three".