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75031055 = 5111364201
BaseRepresentation
bin1000111100011…
…10001000001111
312020011222020222
410132032020033
5123201443210
611240101555
71600516301
oct436161017
9166158228
1075031055
1139397a40
12211648bb
1312710798
149d71971
1568c1655
hex478e20f

75031055 has 8 divisors (see below), whose sum is σ = 98222544. Its totient is φ = 54568000.

The previous prime is 75031051. The next prime is 75031063. The reversal of 75031055 is 55013057.

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

It is not a de Polignac number, because 75031055 - 22 = 75031051 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 (75031051) 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, 682046 + ... + 682155.

It is an arithmetic number, because the mean of its divisors is an integer number (12277818).

Almost surely, 275031055 is an apocalyptic number.

75031055 is a deficient number, since it is larger than the sum of its proper divisors (23191489).

75031055 is a wasteful number, since it uses less digits than its factorization.

75031055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1364217.

The product of its (nonzero) digits is 2625, while the sum is 26.

The square root of 75031055 is about 8662.0468135424. The cubic root of 75031055 is about 421.7745308443.

It can be divided in two parts, 7503 and 1055, that added together give a palindrome (8558).

The spelling of 75031055 in words is "seventy-five million, thirty-one thousand, fifty-five".

Divisors: 1 5 11 55 1364201 6821005 15006211 75031055