102160521 has 30 divisors (see below), whose sum is σ = 155890350. Its totient is φ = 66673152.

The previous prime is 102160517. The next prime is 102160547. The reversal of 102160521 is 125061201.

It can be written as a sum of positive squares in 3 ways, for example, as 40144896 + 62015625 = 6336^2 + 7875^2 .

It is not a de Polignac number, because 102160521 - 2² = 102160517 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 102160494 and 102160503.

It is not an unprimeable number, because it can be changed into a prime (102160501) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 227305 + ... + 227753.

It is an arithmetic number, because the mean of its divisors is an integer number (5196345).

Almost surely, 2^102160521 is an apocalyptic number.

It is an amenable number.

102160521 is a deficient number, since it is larger than the sum of its proper divisors (53729829).

102160521 is an frugal number, since it uses more digits than its factorization.

102160521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 567 (or 505 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

The square root of 102160521 is about 10107.4487878990. The cubic root of 102160521 is about 467.4778446610.

The spelling of 102160521 in words is "one hundred two million, one hundred sixty thousand, five hundred twenty-one".