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80107457 = 611313237
BaseRepresentation
bin1001100011001…
…01011111000001
312120201212202212
410301211133001
5131001414312
611540551505
71661621303
oct461453701
9176655685
1080107457
1141244a11
12229b2595
131379a281
14a8d3973
157075822
hex4c657c1

80107457 has 4 divisors (see below), whose sum is σ = 81420756. Its totient is φ = 78794160.

The previous prime is 80107429. The next prime is 80107471. The reversal of 80107457 is 75470108.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 20647936 + 59459521 = 4544^2 + 7711^2 .

It is a cyclic number.

It is not a de Polignac number, because 80107457 - 218 = 79845313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80107957) 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 3 ways as a sum of consecutive naturals, for example, 656558 + ... + 656679.

It is an arithmetic number, because the mean of its divisors is an integer number (20355189).

Almost surely, 280107457 is an apocalyptic number.

It is an amenable number.

80107457 is a deficient number, since it is larger than the sum of its proper divisors (1313299).

80107457 is a wasteful number, since it uses less digits than its factorization.

80107457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1313298.

The product of its (nonzero) digits is 7840, while the sum is 32.

The square root of 80107457 is about 8950.2769230901. The cubic root of 80107457 is about 431.0797759318.

The spelling of 80107457 in words is "eighty million, one hundred seven thousand, four hundred fifty-seven".

Divisors: 1 61 1313237 80107457