120236553 has 6 divisors (see below), whose sum is σ = 173675034. Its totient is φ = 80157696.

The previous prime is 120236549. The next prime is 120236629. The reversal of 120236553 is 355632021.

120236553 is a `hidden beast` number, since 1 + 2 + 0 + 2 + 3 + 655 + 3 = 666.

It can be written as a sum of positive squares in only one way, i.e., 105513984 + 14722569 = 10272^2 + 3837^2 .

It is not a de Polignac number, because 120236553 - 2² = 120236549 is a prime.

It is not an unprimeable number, because it can be changed into a prime (120236153) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6679800 + ... + 6679817.

It is an arithmetic number, because the mean of its divisors is an integer number (28945839).

Almost surely, 2^120236553 is an apocalyptic number.

It is an amenable number.

120236553 is a deficient number, since it is larger than the sum of its proper divisors (53438481).

120236553 is a wasteful number, since it uses less digits than its factorization.

120236553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13359623 (or 13359620 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 27.

The square root of 120236553 is about 10965.2429521648. The cubic root of 120236553 is about 493.5663076125.

Adding to 120236553 its reverse (355632021), we get a palindrome (475868574).

The spelling of 120236553 in words is "one hundred twenty million, two hundred thirty-six thousand, five hundred fifty-three".