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2052171007 = 7128903817
BaseRepresentation
bin111101001010001…
…1010010011111111
312022000112002101121
41322110122103333
513200323433012
6535345051411
7101566110565
oct17224322377
95260462347
102052171007
119634404a7
12493326b67
13269212993
14156799a35
15c026aa07
hex7a51a4ff

2052171007 has 4 divisors (see below), whose sum is σ = 2081074896. Its totient is φ = 2023267120.

The previous prime is 2052170987. The next prime is 2052171047. The reversal of 2052171007 is 7001712502.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7001712502 = 23500856251.

It is not a de Polignac number, because 2052171007 - 215 = 2052138239 is a prime.

It is a super-2 number, since 2×20521710072 = 8422811683942788098, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2052171047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14451838 + ... + 14451979.

It is an arithmetic number, because the mean of its divisors is an integer number (520268724).

Almost surely, 22052171007 is an apocalyptic number.

2052171007 is a deficient number, since it is larger than the sum of its proper divisors (28903889).

2052171007 is an equidigital number, since it uses as much as digits as its factorization.

2052171007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28903888.

The product of its (nonzero) digits is 980, while the sum is 25.

The square root of 2052171007 is about 45300.8941081741. The cubic root of 2052171007 is about 1270.7823742708.

Adding to 2052171007 its reverse (7001712502), we get a palindrome (9053883509).

The spelling of 2052171007 in words is "two billion, fifty-two million, one hundred seventy-one thousand, seven".

Divisors: 1 71 28903817 2052171007