70516291 has 2 divisors, whose sum is σ = 70516292. Its totient is φ = 70516290.

The previous prime is 70516283. The next prime is 70516307. The reversal of 70516291 is 19261507.

It is a weak prime.

It is an emirp because it is prime and its reverse (19261507) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 70516291 - 2³ = 70516283 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (70516241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35258145 + 35258146.

It is an arithmetic number, because the mean of its divisors is an integer number (35258146).

Almost surely, 2^70516291 is an apocalyptic number.

70516291 is a deficient number, since it is larger than the sum of its proper divisors (1).

70516291 is an equidigital number, since it uses as much as digits as its factorization.

70516291 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3780, while the sum is 31.

The square root of 70516291 is about 8397.3978707693. The cubic root of 70516291 is about 413.1392788499.

Adding to 70516291 its reverse (19261507), we get a palindrome (89777798).

It can be divided in two parts, 70516 and 291, that added together give a palindrome (70807).

The spelling of 70516291 in words is "seventy million, five hundred sixteen thousand, two hundred ninety-one".