162727561 has 2 divisors, whose sum is σ = 162727562. Its totient is φ = 162727560.

The previous prime is 162727493. The next prime is 162727573. The reversal of 162727561 is 165727261.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 135489600 + 27237961 = 11640^2 + 5219^2 .

It is a cyclic number.

It is not a de Polignac number, because 162727561 - 2²¹ = 160630409 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 162727561.

It is not a weakly prime, because it can be changed into another prime (162727661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81363780 + 81363781.

It is an arithmetic number, because the mean of its divisors is an integer number (81363781).

Almost surely, 2^162727561 is an apocalyptic number.

It is an amenable number.

162727561 is a deficient number, since it is larger than the sum of its proper divisors (1).

162727561 is an equidigital number, since it uses as much as digits as its factorization.

162727561 is an evil number, because the sum of its binary digits is even.

The product of its digits is 35280, while the sum is 37.

The square root of 162727561 is about 12756.4713381091. The cubic root of 162727561 is about 545.9510493401.

The spelling of 162727561 in words is "one hundred sixty-two million, seven hundred twenty-seven thousand, five hundred sixty-one".