51352515597469 has 2 divisors, whose sum is σ = 51352515597470. Its totient is φ = 51352515597468.

The previous prime is 51352515597457. The next prime is 51352515597473. The reversal of 51352515597469 is 96479551525315.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 43162101225369 + 8190414372100 = 6569787^2 + 2861890^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51352515597469 is a prime.

It is a super-2 number, since 2×51352515597469² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51352515597499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25676257798734 + 25676257798735.

It is an arithmetic number, because the mean of its divisors is an integer number (25676257798735).

Almost surely, 2^{51352515597469} is an apocalyptic number.

It is an amenable number.

51352515597469 is a deficient number, since it is larger than the sum of its proper divisors (1).

51352515597469 is an equidigital number, since it uses as much as digits as its factorization.

51352515597469 is an evil number, because the sum of its binary digits is even.

The product of its digits is 255150000, while the sum is 67.

The spelling of 51352515597469 in words is "fifty-one trillion, three hundred fifty-two billion, five hundred fifteen million, five hundred ninety-seven thousand, four hundred sixty-nine".