102971761 has 4 divisors (see below), whose sum is σ = 102997492. Its totient is φ = 102946032.

The previous prime is 102971741. The next prime is 102971807. The reversal of 102971761 is 167179201.

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 92448225 + 10523536 = 9615^2 + 3244^2 .

It is a cyclic number.

It is not a de Polignac number, because 102971761 - 2¹⁹ = 102447473 is a prime.

It is a super-2 number, since 2×102971761² = 21206367126882242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102971711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5430 + ... + 15343.

It is an arithmetic number, because the mean of its divisors is an integer number (25749373).

Almost surely, 2^102971761 is an apocalyptic number.

It is an amenable number.

102971761 is a deficient number, since it is larger than the sum of its proper divisors (25731).

102971761 is an equidigital number, since it uses as much as digits as its factorization.

102971761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25730.

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

The square root of 102971761 is about 10147.5002340478. The cubic root of 102971761 is about 468.7119721210.

The spelling of 102971761 in words is "one hundred two million, nine hundred seventy-one thousand, seven hundred sixty-one".