102280897 has 2 divisors, whose sum is σ = 102280898. Its totient is φ = 102280896.

The previous prime is 102280877. The next prime is 102280949. The reversal of 102280897 is 798082201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 61716736 + 40564161 = 7856^2 + 6369^2 .

It is a cyclic number.

It is not a de Polignac number, because 102280897 - 2⁷ = 102280769 is a prime.

It is a super-2 number, since 2×102280897² = 20922763782249218, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (102280837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51140448 + 51140449.

It is an arithmetic number, because the mean of its divisors is an integer number (51140449).

Almost surely, 2^102280897 is an apocalyptic number.

It is an amenable number.

102280897 is a deficient number, since it is larger than the sum of its proper divisors (1).

102280897 is an equidigital number, since it uses as much as digits as its factorization.

102280897 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16128, while the sum is 37.

The square root of 102280897 is about 10113.4018510094. The cubic root of 102280897 is about 467.6613827006.

The spelling of 102280897 in words is "one hundred two million, two hundred eighty thousand, eight hundred ninety-seven".