169414561 has 2 divisors, whose sum is σ = 169414562. Its totient is φ = 169414560.

The previous prime is 169414541. The next prime is 169414577. The reversal of 169414561 is 165414961.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 169390225 + 24336 = 13015^2 + 156^2 .

It is a cyclic number.

It is not a de Polignac number, because 169414561 - 2⁵ = 169414529 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a self number, because there is not a number n which added to its sum of digits gives 169414561.

It is not a weakly prime, because it can be changed into another prime (169414541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84707280 + 84707281.

It is an arithmetic number, because the mean of its divisors is an integer number (84707281).

Almost surely, 2^169414561 is an apocalyptic number.

It is an amenable number.

169414561 is a deficient number, since it is larger than the sum of its proper divisors (1).

169414561 is an equidigital number, since it uses as much as digits as its factorization.

169414561 is an evil number, because the sum of its binary digits is even.

The product of its digits is 25920, while the sum is 37.

The square root of 169414561 is about 13015.9348876675. The cubic root of 169414561 is about 553.3291860708.

The spelling of 169414561 in words is "one hundred sixty-nine million, four hundred fourteen thousand, five hundred sixty-one".