161146001 has 2 divisors, whose sum is σ = 161146002. Its totient is φ = 161146000.

The previous prime is 161145991. The next prime is 161146039. The reversal of 161146001 is 100641161.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 153165376 + 7980625 = 12376^2 + 2825^2 .

It is an emirp because it is prime and its reverse (100641161) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 161146001 - 2⁶ = 161145937 is a prime.

It is not a weakly prime, because it can be changed into another prime (161146501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80573000 + 80573001.

It is an arithmetic number, because the mean of its divisors is an integer number (80573001).

Almost surely, 2^161146001 is an apocalyptic number.

It is an amenable number.

161146001 is a deficient number, since it is larger than the sum of its proper divisors (1).

161146001 is an equidigital number, since it uses as much as digits as its factorization.

161146001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 20.

The square root of 161146001 is about 12694.3294820955. The cubic root of 161146001 is about 544.1765765908.

Adding to 161146001 its reverse (100641161), we get a palindrome (261787162).

The spelling of 161146001 in words is "one hundred sixty-one million, one hundred forty-six thousand, one".