70001573 has 2 divisors, whose sum is σ = 70001574. Its totient is φ = 70001572.

The previous prime is 70001513. The next prime is 70001593. The reversal of 70001573 is 37510007.

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., 61434244 + 8567329 = 7838^2 + 2927^2 .

It is a cyclic number.

It is not a de Polignac number, because 70001573 - 2¹⁰ = 70000549 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 (70001513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35000786 + 35000787.

It is an arithmetic number, because the mean of its divisors is an integer number (35000787).

Almost surely, 2^70001573 is an apocalyptic number.

It is an amenable number.

70001573 is a deficient number, since it is larger than the sum of its proper divisors (1).

70001573 is an equidigital number, since it uses as much as digits as its factorization.

70001573 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 735, while the sum is 23.

The square root of 70001573 is about 8366.6942695428. The cubic root of 70001573 is about 412.1316169967.

The spelling of 70001573 in words is "seventy million, one thousand, five hundred seventy-three".