51250105 has 16 divisors (see below), whose sum is σ = 63835200. Its totient is φ = 39453120.
The previous prime is 51250097. The next prime is 51250117. The reversal of 51250105 is 50105215.
It is not a de Polignac number, because 51250105 - 23 = 51250097 is a prime.
It is a super-2 number, since 2×512501052 = 5253146525022050, which contains 22 as substring.
It is an unprimeable number.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 82486 + ... + 83104.
It is an arithmetic number, because the mean of its divisors is an integer number (3989700).
Almost surely, 251250105 is an apocalyptic number.
It is an amenable number.
51250105 is a deficient number, since it is larger than the sum of its proper divisors (12585095).
51250105 is a wasteful number, since it uses less digits than its factorization.
51250105 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 1224.
The product of its (nonzero) digits is 250, while the sum is 19.
The square root of 51250105 is about 7158.9178651525. The cubic root of 51250105 is about 371.4481957439.
The spelling of 51250105 in words is "fifty-one million, two hundred fifty thousand, one hundred five".
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