104050531515257 has 2 divisors, whose sum is σ = 104050531515258. Its totient is φ = 104050531515256.

The previous prime is 104050531515233. The next prime is 104050531515319. The reversal of 104050531515257 is 752515135050401.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 80744529753616 + 23306001761641 = 8985796^2 + 4827629^2 .

It is a cyclic number.

It is not a de Polignac number, because 104050531515257 - 2²² = 104050527320953 is a prime.

It is a super-3 number, since 3×104050531515257³ (a number of 43 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (104050531505257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52025265757628 + 52025265757629.

It is an arithmetic number, because the mean of its divisors is an integer number (52025265757629).

Almost surely, 2^{104050531515257} is an apocalyptic number.

It is an amenable number.

104050531515257 is a deficient number, since it is larger than the sum of its proper divisors (1).

104050531515257 is an equidigital number, since it uses as much as digits as its factorization.

104050531515257 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 525000, while the sum is 44.

Adding to 104050531515257 its reverse (752515135050401), we get a palindrome (856565666565658).

The spelling of 104050531515257 in words is "one hundred four trillion, fifty billion, five hundred thirty-one million, five hundred fifteen thousand, two hundred fifty-seven".