1501020173 has 2 divisors, whose sum is σ = 1501020174. Its totient is φ = 1501020172.

The previous prime is 1501020167. The next prime is 1501020203. The reversal of 1501020173 is 3710201051.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1245595849 + 255424324 = 35293^2 + 15982^2 .

It is a cyclic number.

It is not a de Polignac number, because 1501020173 - 2²⁴ = 1484242957 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 (1501020113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 750510086 + 750510087.

It is an arithmetic number, because the mean of its divisors is an integer number (750510087).

Almost surely, 2^1501020173 is an apocalyptic number.

It is an amenable number.

1501020173 is a deficient number, since it is larger than the sum of its proper divisors (1).

1501020173 is an equidigital number, since it uses as much as digits as its factorization.

1501020173 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 210, while the sum is 20.

The square root of 1501020173 is about 38743.0016002891. The cubic root of 1501020173 is about 1144.9736963123.

The spelling of 1501020173 in words is "one billion, five hundred one million, twenty thousand, one hundred seventy-three".