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51125051 is a prime number
BaseRepresentation
bin1100001100000…
…1101100111011
310120012102101102
43003001230323
5101042000201
65023442015
71160361425
oct303015473
9116172342
1051125051
112694a00a
121515630b
13a790513
146b0b815
15474d26b
hex30c1b3b

51125051 has 2 divisors, whose sum is σ = 51125052. Its totient is φ = 51125050.

The previous prime is 51125027. The next prime is 51125077. The reversal of 51125051 is 15052115.

It is a happy number.

51125051 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-51125051 is a prime.

It is a super-2 number, since 2×511250512 = 5227541679505202, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (51145051) 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 as a sum of consecutive naturals, namely, 25562525 + 25562526.

It is an arithmetic number, because the mean of its divisors is an integer number (25562526).

Almost surely, 251125051 is an apocalyptic number.

51125051 is a deficient number, since it is larger than the sum of its proper divisors (1).

51125051 is an equidigital number, since it uses as much as digits as its factorization.

51125051 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 250, while the sum is 20.

The square root of 51125051 is about 7150.1783893830. The cubic root of 51125051 is about 371.1458294345.

Adding to 51125051 its reverse (15052115), we get a palindrome (66177166).

The spelling of 51125051 in words is "fifty-one million, one hundred twenty-five thousand, fifty-one".