162105457 has 2 divisors, whose sum is σ = 162105458. Its totient is φ = 162105456.

The previous prime is 162105451. The next prime is 162105469. The reversal of 162105457 is 754501261.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 141348321 + 20757136 = 11889^2 + 4556^2 .

It is a cyclic number.

It is not a de Polignac number, because 162105457 - 2²⁷ = 27887729 is a prime.

It is not a weakly prime, because it can be changed into another prime (162105451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81052728 + 81052729.

It is an arithmetic number, because the mean of its divisors is an integer number (81052729).

Almost surely, 2^162105457 is an apocalyptic number.

It is an amenable number.

162105457 is a deficient number, since it is larger than the sum of its proper divisors (1).

162105457 is an equidigital number, since it uses as much as digits as its factorization.

162105457 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8400, while the sum is 31.

The square root of 162105457 is about 12732.0641295903. The cubic root of 162105457 is about 545.2544411336.

The spelling of 162105457 in words is "one hundred sixty-two million, one hundred five thousand, four hundred fifty-seven".