70971253 has 2 divisors, whose sum is σ = 70971254. Its totient is φ = 70971252.

The previous prime is 70971239. The next prime is 70971319. The reversal of 70971253 is 35217907.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 67519089 + 3452164 = 8217^2 + 1858^2 .

It is an emirp because it is prime and its reverse (35217907) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 70971253 - 2⁵ = 70971221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70971203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35485626 + 35485627.

It is an arithmetic number, because the mean of its divisors is an integer number (35485627).

Almost surely, 2^70971253 is an apocalyptic number.

It is an amenable number.

70971253 is a deficient number, since it is larger than the sum of its proper divisors (1).

70971253 is an equidigital number, since it uses as much as digits as its factorization.

70971253 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13230, while the sum is 34.

The square root of 70971253 is about 8424.4437798587. The cubic root of 70971253 is about 414.0258819109.

The spelling of 70971253 in words is "seventy million, nine hundred seventy-one thousand, two hundred fifty-three".