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83215253 = 1131244033
BaseRepresentation
bin1001111010111…
…00001110010101
312210120202212102
410331130032111
5132300342003
612131331445
72030214032
oct475341625
9183522772
1083215253
1142a77940
1223a50b85
13143179c4
14b0a2389
15748b588
hex4f5c395

83215253 has 8 divisors (see below), whose sum is σ = 93709056. Its totient is φ = 73209600.

The previous prime is 83215217. The next prime is 83215271. The reversal of 83215253 is 35251238.

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

It is not a de Polignac number, because 83215253 - 26 = 83215189 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83215753) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 121676 + ... + 122357.

It is an arithmetic number, because the mean of its divisors is an integer number (11713632).

Almost surely, 283215253 is an apocalyptic number.

It is an amenable number.

83215253 is a deficient number, since it is larger than the sum of its proper divisors (10493803).

83215253 is a wasteful number, since it uses less digits than its factorization.

83215253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244075.

The product of its digits is 7200, while the sum is 29.

The square root of 83215253 is about 9122.2394728488. The cubic root of 83215253 is about 436.5838295040.

The spelling of 83215253 in words is "eighty-three million, two hundred fifteen thousand, two hundred fifty-three".

Divisors: 1 11 31 341 244033 2684363 7565023 83215253