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53142213 = 323770177
BaseRepresentation
bin1100101010111…
…0001011000101
310200222220102010
43022232023011
5102101022323
65135004433
71213462365
oct312561305
9120886363
1053142213
1127aa7593
1215969719
13b0186c7
1470b49a5
1549eac93
hex32ae2c5

53142213 has 8 divisors (see below), whose sum is σ = 73937088. Its totient is φ = 33887744.

The previous prime is 53142211. The next prime is 53142227. The reversal of 53142213 is 31224135.

53142213 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 53142213 - 21 = 53142211 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 53142213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53142211) 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 7 ways as a sum of consecutive naturals, for example, 385020 + ... + 385157.

It is an arithmetic number, because the mean of its divisors is an integer number (9242136).

Almost surely, 253142213 is an apocalyptic number.

It is an amenable number.

53142213 is a deficient number, since it is larger than the sum of its proper divisors (20794875).

53142213 is a wasteful number, since it uses less digits than its factorization.

53142213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 770203.

The product of its digits is 720, while the sum is 21.

The square root of 53142213 is about 7289.8705749828. The cubic root of 53142213 is about 375.9642456005.

Adding to 53142213 its reverse (31224135), we get a palindrome (84366348).

The spelling of 53142213 in words is "fifty-three million, one hundred forty-two thousand, two hundred thirteen".

Divisors: 1 3 23 69 770177 2310531 17714071 53142213