102110257 has 2 divisors, whose sum is σ = 102110258. Its totient is φ = 102110256.

The previous prime is 102110243. The next prime is 102110291. The reversal of 102110257 is 752011201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 55815841 + 46294416 = 7471^2 + 6804^2 .

It is a cyclic number.

It is not a de Polignac number, because 102110257 - 2¹⁵ = 102077489 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (102110227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51055128 + 51055129.

It is an arithmetic number, because the mean of its divisors is an integer number (51055129).

Almost surely, 2^102110257 is an apocalyptic number.

It is an amenable number.

102110257 is a deficient number, since it is larger than the sum of its proper divisors (1).

102110257 is an equidigital number, since it uses as much as digits as its factorization.

102110257 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 140, while the sum is 19.

The square root of 102110257 is about 10104.9619989389. The cubic root of 102110257 is about 467.4011641558.

Adding to 102110257 its reverse (752011201), we get a palindrome (854121458).

The spelling of 102110257 in words is "one hundred two million, one hundred ten thousand, two hundred fifty-seven".