102650257 has 2 divisors, whose sum is σ = 102650258. Its totient is φ = 102650256.

The previous prime is 102650237. The next prime is 102650263. The reversal of 102650257 is 752056201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 57168721 + 45481536 = 7561^2 + 6744^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102650257 is a prime.

It is a Chen prime.

It is equal to p_5905351 and since 102650257 and 5905351 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (102650237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51325128 + 51325129.

It is an arithmetic number, because the mean of its divisors is an integer number (51325129).

Almost surely, 2^102650257 is an apocalyptic number.

It is an amenable number.

102650257 is a deficient number, since it is larger than the sum of its proper divisors (1).

102650257 is an equidigital number, since it uses as much as digits as its factorization.

102650257 is an evil number, because the sum of its binary digits is even.

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

The square root of 102650257 is about 10131.6463124213. The cubic root of 102650257 is about 468.2236509258.

The spelling of 102650257 in words is "one hundred two million, six hundred fifty thousand, two hundred fifty-seven".