102797161 has 4 divisors (see below), whose sum is σ = 103319172. Its totient is φ = 102275152.

The previous prime is 102797129. The next prime is 102797171. The reversal of 102797161 is 161797201.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 101707225 + 1089936 = 10085^2 + 1044^2 .

It is a cyclic number.

It is not a de Polignac number, because 102797161 - 2⁵ = 102797129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102797171) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 260710 + ... + 261103.

It is an arithmetic number, because the mean of its divisors is an integer number (25829793).

Almost surely, 2^102797161 is an apocalyptic number.

It is an amenable number.

102797161 is a deficient number, since it is larger than the sum of its proper divisors (522011).

102797161 is an equidigital number, since it uses as much as digits as its factorization.

102797161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 522010.

The product of its (nonzero) digits is 5292, while the sum is 34.

The square root of 102797161 is about 10138.8934800598. The cubic root of 102797161 is about 468.4469045989.

The spelling of 102797161 in words is "one hundred two million, seven hundred ninety-seven thousand, one hundred sixty-one".