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70141771 = 710020253
BaseRepresentation
bin1000010111001…
…00011101001011
311212222120102101
410023210131023
5120424014041
610543214231
71511123650
oct413443513
9155876371
1070141771
1136658607
121b5a7377
13116bb20b
14945bc27
156257b31
hex42e474b

70141771 has 4 divisors (see below), whose sum is σ = 80162032. Its totient is φ = 60121512.

The previous prime is 70141769. The next prime is 70141777. The reversal of 70141771 is 17714107.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17714107 = 73242659.

It is a cyclic number.

It is not a de Polignac number, because 70141771 - 21 = 70141769 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70141777) 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, 5010120 + ... + 5010133.

It is an arithmetic number, because the mean of its divisors is an integer number (20040508).

Almost surely, 270141771 is an apocalyptic number.

70141771 is a deficient number, since it is larger than the sum of its proper divisors (10020261).

70141771 is a wasteful number, since it uses less digits than its factorization.

70141771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10020260.

The product of its (nonzero) digits is 1372, while the sum is 28.

The square root of 70141771 is about 8375.0684176310. The cubic root of 70141771 is about 412.4065703308.

Adding to 70141771 its reverse (17714107), we get a palindrome (87855878).

The spelling of 70141771 in words is "seventy million, one hundred forty-one thousand, seven hundred seventy-one".

Divisors: 1 7 10020253 70141771