101000051 has 2 divisors, whose sum is σ = 101000052.
Its totient is φ = 101000050.
The previous prime is 101000027. The next prime is 101000057. The reversal of 101000051 is 150000101.
Adding to 101000051 its reverse (150000101), we get a palindrome (251000152).
Subtracting 101000051 from its reverse (150000101), we obtain a triangular number (49000050 = T9899).
It is a happy number.
It is a strong prime.
It is a cyclic number.
It is not a de Polignac number, because 101000051 - 214 = 100983667 is a prime.
It is not a weakly prime, because it can be changed into another prime (101000057) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50500025 + 50500026.
It is an arithmetic number, because the mean of its divisors is an integer number (50500026).
Almost surely, 2101000051 is an apocalyptic number.
101000051 is a deficient number, since it is larger than the sum of its proper divisors (1).
101000051 is an equidigital number, since it uses as much as digits as its factorization.
101000051 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 5, while the sum is 8.
The square root of 101000051 is about 10049.8781584654.
The cubic root of 101000051 is about 465.7010291657.
The spelling of 101000051 in words is "one hundred one million, fifty-one", and thus it is an aban number.