161454577 has 2 divisors, whose sum is σ = 161454578. Its totient is φ = 161454576.

The previous prime is 161454529. The next prime is 161454581. The reversal of 161454577 is 775454161.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 141348321 + 20106256 = 11889^2 + 4484^2 .

It is a cyclic number.

It is not a de Polignac number, because 161454577 - 2¹⁵ = 161421809 is a prime.

It is not a weakly prime, because it can be changed into another prime (161454877) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80727288 + 80727289.

It is an arithmetic number, because the mean of its divisors is an integer number (80727289).

Almost surely, 2^161454577 is an apocalyptic number.

It is an amenable number.

161454577 is a deficient number, since it is larger than the sum of its proper divisors (1).

161454577 is an equidigital number, since it uses as much as digits as its factorization.

161454577 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 117600, while the sum is 40.

The square root of 161454577 is about 12706.4777574275. The cubic root of 161454577 is about 544.5237002380.

The spelling of 161454577 in words is "one hundred sixty-one million, four hundred fifty-four thousand, five hundred seventy-seven".