1501200161 has 2 divisors, whose sum is σ = 1501200162. Its totient is φ = 1501200160.

The previous prime is 1501200157. The next prime is 1501200187. The reversal of 1501200161 is 1610021051.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1412256400 + 88943761 = 37580^2 + 9431^2 .

It is an emirp because it is prime and its reverse (1610021051) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1501200161 - 2² = 1501200157 is a prime.

It is not a weakly prime, because it can be changed into another prime (1501200101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 750600080 + 750600081.

It is an arithmetic number, because the mean of its divisors is an integer number (750600081).

Almost surely, 2^1501200161 is an apocalyptic number.

It is an amenable number.

1501200161 is a deficient number, since it is larger than the sum of its proper divisors (1).

1501200161 is an equidigital number, since it uses as much as digits as its factorization.

1501200161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 60, while the sum is 17.

The square root of 1501200161 is about 38745.3243759812. The cubic root of 1501200161 is about 1145.0194592524.

The spelling of 1501200161 in words is "one billion, five hundred one million, two hundred thousand, one hundred sixty-one".