102161251 has 8 divisors (see below), whose sum is σ = 102924080. Its totient is φ = 101401632.

The previous prime is 102161243. The next prime is 102161291. The reversal of 102161251 is 152161201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 102161251 - 2³ = 102161243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102161291) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 119341 + ... + 120193.

It is an arithmetic number, because the mean of its divisors is an integer number (12865510).

Almost surely, 2^102161251 is an apocalyptic number.

102161251 is a deficient number, since it is larger than the sum of its proper divisors (762829).

102161251 is an equidigital number, since it uses as much as digits as its factorization.

102161251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1605.

The product of its (nonzero) digits is 120, while the sum is 19.

The square root of 102161251 is about 10107.4848998156. The cubic root of 102161251 is about 467.4789581310.

The spelling of 102161251 in words is "one hundred two million, one hundred sixty-one thousand, two hundred fifty-one".