162099521 has 2 divisors, whose sum is σ = 162099522. Its totient is φ = 162099520.

The previous prime is 162099503. The next prime is 162099529. The reversal of 162099521 is 125990261.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 146410000 + 15689521 = 12100^2 + 3961^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-162099521 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (162099529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81049760 + 81049761.

It is an arithmetic number, because the mean of its divisors is an integer number (81049761).

Almost surely, 2^162099521 is an apocalyptic number.

It is an amenable number.

162099521 is a deficient number, since it is larger than the sum of its proper divisors (1).

162099521 is an equidigital number, since it uses as much as digits as its factorization.

162099521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9720, while the sum is 35.

The square root of 162099521 is about 12731.8310152154. The cubic root of 162099521 is about 545.2477856516.

The spelling of 162099521 in words is "one hundred sixty-two million, ninety-nine thousand, five hundred twenty-one".