51113707 has 2 divisors, whose sum is σ = 51113708.
Its totient is φ = 51113706.
The previous prime is 51113693. The next prime is 51113717. The reversal of 51113707 is 70731115.
It is a strong prime.
It is a cyclic number.
It is a de Polignac number, because none of the positive numbers 2k-51113707 is a prime.
It is a super-2 number, since 2×511137072 = 5225222086563698, which contains 22 as substring.
It is not a weakly prime, because it can be changed into another prime (51113717) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (17) of ones.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25556853 + 25556854.
It is an arithmetic number, because the mean of its divisors is an integer number (25556854).
Almost surely, 251113707 is an apocalyptic number.
51113707 is a deficient number, since it is larger than the sum of its proper divisors (1).
51113707 is an equidigital number, since it uses as much as digits as its factorization.
51113707 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 735, while the sum is 25.
The square root of 51113707 is about 7149.3850784526.
The cubic root of 51113707 is about 371.1183765541.
The spelling of 51113707 in words is "fifty-one million, one hundred thirteen thousand, seven hundred seven".