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53233453 = 7213193433
BaseRepresentation
bin1100101100010…
…0011100101101
310201011112120101
43023010130231
5102111432303
65140551101
71214322400
oct313043455
9121145511
1053233453
112805a099
12159b2491
13b04b0b0
1470d9d37
154a17d1d
hex32c472d

53233453 has 24 divisors (see below), whose sum is σ = 67188408. Its totient is φ = 41803776.

The previous prime is 53233451. The next prime is 53233471. The reversal of 53233453 is 35433235.

53233453 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 1350244 + 51883209 = 1162^2 + 7203^2 .

It is not a de Polignac number, because 53233453 - 21 = 53233451 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53233451) 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 23 ways as a sum of consecutive naturals, for example, 122725 + ... + 123157.

It is an arithmetic number, because the mean of its divisors is an integer number (2799517).

Almost surely, 253233453 is an apocalyptic number.

It is an amenable number.

53233453 is a deficient number, since it is larger than the sum of its proper divisors (13954955).

53233453 is a wasteful number, since it uses less digits than its factorization.

53233453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 653 (or 646 counting only the distinct ones).

The product of its digits is 16200, while the sum is 28.

The square root of 53233453 is about 7296.1258898130. The cubic root of 53233453 is about 376.1792872338.

Adding to 53233453 its reverse (35433235), we get a palindrome (88666688).

The spelling of 53233453 in words is "fifty-three million, two hundred thirty-three thousand, four hundred fifty-three".

Divisors: 1 7 13 49 91 193 433 637 1351 2509 3031 5629 9457 17563 21217 39403 83569 122941 275821 584983 1086397 4094881 7604779 53233453