51125835357247 has 4 divisors (see below), whose sum is σ = 58429526122576. Its totient is φ = 43822144591920.

The previous prime is 51125835357211. The next prime is 51125835357271. The reversal of 51125835357247 is 74275353852115.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 51125835357247 - 2⁷ = 51125835357119 is a prime.

It is a super-2 number, since 2×51125835357247² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 51125835357191 and 51125835357200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51125835357287) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3651845382654 + ... + 3651845382667.

It is an arithmetic number, because the mean of its divisors is an integer number (14607381530644).

Almost surely, 2^{51125835357247} is an apocalyptic number.

51125835357247 is a deficient number, since it is larger than the sum of its proper divisors (7303690765329).

51125835357247 is an equidigital number, since it uses as much as digits as its factorization.

51125835357247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7303690765328.

The product of its digits is 35280000, while the sum is 58.

The spelling of 51125835357247 in words is "fifty-one trillion, one hundred twenty-five billion, eight hundred thirty-five million, three hundred fifty-seven thousand, two hundred forty-seven".