162087481 has 2 divisors, whose sum is σ = 162087482. Its totient is φ = 162087480.

The previous prime is 162087439. The next prime is 162087493. The reversal of 162087481 is 184780261.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 118461456 + 43626025 = 10884^2 + 6605^2 .

It is a cyclic number.

It is not a de Polignac number, because 162087481 - 2¹⁵ = 162054713 is a prime.

It is a super-2 number, since 2×162087481² = 52544702993850722, which contains 22 as substring.

It is equal to p_9084844 and since 162087481 and 9084844 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 162087481.

It is not a weakly prime, because it can be changed into another prime (162087421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81043740 + 81043741.

It is an arithmetic number, because the mean of its divisors is an integer number (81043741).

Almost surely, 2^162087481 is an apocalyptic number.

It is an amenable number.

162087481 is a deficient number, since it is larger than the sum of its proper divisors (1).

162087481 is an equidigital number, since it uses as much as digits as its factorization.

162087481 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21504, while the sum is 37.

The square root of 162087481 is about 12731.3581757800. The cubic root of 162087481 is about 545.2342858258.

The spelling of 162087481 in words is "one hundred sixty-two million, eighty-seven thousand, four hundred eighty-one".