102081277 has 4 divisors (see below), whose sum is σ = 108086076. Its totient is φ = 96076480.

The previous prime is 102081271. The next prime is 102081283. The reversal of 102081277 is 772180201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 772180201 = 13 ⋅59398477.

It is an interprime number because it is at equal distance from previous prime (102081271) and next prime (102081283).

It can be written as a sum of positive squares in 2 ways, for example, as 81342361 + 20738916 = 9019^2 + 4554^2 .

It is a cyclic number.

It is not a de Polignac number, because 102081277 - 2¹⁵ = 102048509 is a prime.

It is a super-2 number, since 2×102081277² = 20841174227901458, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102081271) 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, 3002374 + ... + 3002407.

It is an arithmetic number, because the mean of its divisors is an integer number (27021519).

Almost surely, 2^102081277 is an apocalyptic number.

102081277 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

102081277 is a deficient number, since it is larger than the sum of its proper divisors (6004799).

102081277 is an equidigital number, since it uses as much as digits as its factorization.

102081277 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6004798.

The product of its (nonzero) digits is 1568, while the sum is 28.

The square root of 102081277 is about 10103.5279481971. The cubic root of 102081277 is about 467.3569421297.

The spelling of 102081277 in words is "one hundred two million, eighty-one thousand, two hundred seventy-seven".