51123252007 has 2 divisors, whose sum is σ = 51123252008. Its totient is φ = 51123252006.

The previous prime is 51123251999. The next prime is 51123252031. The reversal of 51123252007 is 70025232115.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51123252007 - 2³ = 51123251999 is a prime.

It is a super-2 number, since 2×51123252007² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51123252097) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25561626003 + 25561626004.

It is an arithmetic number, because the mean of its divisors is an integer number (25561626004).

Almost surely, 2^51123252007 is an apocalyptic number.

51123252007 is a deficient number, since it is larger than the sum of its proper divisors (1).

51123252007 is an equidigital number, since it uses as much as digits as its factorization.

51123252007 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4200, while the sum is 28.

The spelling of 51123252007 in words is "fifty-one billion, one hundred twenty-three million, two hundred fifty-two thousand, seven".