162404261 has 2 divisors, whose sum is σ = 162404262. Its totient is φ = 162404260.

The previous prime is 162404251. The next prime is 162404293.

162404261 is nontrivially palindromic in base 10.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 142324900 + 20079361 = 11930^2 + 4481^2 .

It is a palprime.

It is a cyclic number.

It is not a de Polignac number, because 162404261 - 2¹⁴ = 162387877 is a prime.

It is a super-2 number, since 2×162404261² = 52750287981912242, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 162404261.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (162404201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81202130 + 81202131.

It is an arithmetic number, because the mean of its divisors is an integer number (81202131).

Almost surely, 2^162404261 is an apocalyptic number.

It is an amenable number.

162404261 is a deficient number, since it is larger than the sum of its proper divisors (1).

162404261 is an equidigital number, since it uses as much as digits as its factorization.

162404261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 162404261 is about 12743.7930381814. The cubic root of 162404261 is about 545.5892524123.

The spelling of 162404261 in words is "one hundred sixty-two million, four hundred four thousand, two hundred sixty-one".