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82755401 = 360722943
BaseRepresentation
bin1001110111010…
…11111101001001
312202201102001212
410323223331021
5132141133101
612113422505
72023260251
oct473537511
9182642055
1082755401
11427933a3
122386aa35
13141b65c1
14adc2961
1573ea1bb
hex4eebf49

82755401 has 4 divisors (see below), whose sum is σ = 82781952. Its totient is φ = 82728852.

The previous prime is 82755397. The next prime is 82755443. The reversal of 82755401 is 10455728.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 82755401 - 22 = 82755397 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82755481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7865 + ... + 15078.

It is an arithmetic number, because the mean of its divisors is an integer number (20695488).

Almost surely, 282755401 is an apocalyptic number.

It is an amenable number.

82755401 is a deficient number, since it is larger than the sum of its proper divisors (26551).

82755401 is a wasteful number, since it uses less digits than its factorization.

82755401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26550.

The product of its (nonzero) digits is 11200, while the sum is 32.

The square root of 82755401 is about 9096.9995602946. Note that the first 3 decimals coincide. The cubic root of 82755401 is about 435.7781482927.

The spelling of 82755401 in words is "eighty-two million, seven hundred fifty-five thousand, four hundred one".

Divisors: 1 3607 22943 82755401