102201797 has 2 divisors, whose sum is σ = 102201798. Its totient is φ = 102201796.

The previous prime is 102201791. The next prime is 102201871. The reversal of 102201797 is 797102201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 92659876 + 9541921 = 9626^2 + 3089^2 .

It is a cyclic number.

It is not a de Polignac number, because 102201797 - 2¹² = 102197701 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102201791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51100898 + 51100899.

It is an arithmetic number, because the mean of its divisors is an integer number (51100899).

Almost surely, 2^102201797 is an apocalyptic number.

It is an amenable number.

102201797 is a deficient number, since it is larger than the sum of its proper divisors (1).

102201797 is an equidigital number, since it uses as much as digits as its factorization.

102201797 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1764, while the sum is 29.

The square root of 102201797 is about 10109.4904421538. The cubic root of 102201797 is about 467.5407946709.

Adding to 102201797 its reverse (797102201), we get a palindrome (899303998).

The spelling of 102201797 in words is "one hundred two million, two hundred one thousand, seven hundred ninety-seven".