161415101 has 2 divisors, whose sum is σ = 161415102. Its totient is φ = 161415100.

The previous prime is 161415043. The next prime is 161415113. The reversal of 161415101 is 101514161.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 157000900 + 4414201 = 12530^2 + 2101^2 .

It is a cyclic number.

It is not a de Polignac number, because 161415101 - 2²² = 157220797 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (161415301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80707550 + 80707551.

It is an arithmetic number, because the mean of its divisors is an integer number (80707551).

Almost surely, 2^161415101 is an apocalyptic number.

It is an amenable number.

161415101 is a deficient number, since it is larger than the sum of its proper divisors (1).

161415101 is an equidigital number, since it uses as much as digits as its factorization.

161415101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 120, while the sum is 20.

The square root of 161415101 is about 12704.9242815532. The cubic root of 161415101 is about 544.4793175389.

Adding to 161415101 its reverse (101514161), we get a palindrome (262929262).

The spelling of 161415101 in words is "one hundred sixty-one million, four hundred fifteen thousand, one hundred one".